**College Algebra and Trigonometry 7th Edition by Margaret L. Lial, ISBN-13: 978-0135924549**

[PDF eBook eTextbook]

- Publisher: ? Pearson; 7th edition (February 8, 2020)
- Language: ? English
**1232 pages(Large File: 80 MB)**

- ISBN-10: ? 0135924545
- ISBN-13: ? 978-0135924549

**For courses in College Algebra & Trigonometry.**

Solid support for an evolving course

** The College Algebra **series by Lial, Hornsby, Schneider, and Daniels combines the experience of master teachers to help students develop the balance of conceptual understanding and analytical skills needed to succeed in mathematics. For this revision, integrated review is now available for every title in the series, to accommodate varying levels of student preparation. The Review chapter has been expanded to cover the basic algebra concepts that students often find most challenging.

**Table of Contents:**

Contents

Preface

Welcome to the 7th Edition

Features of this Text

Get the most out of MyLab Math

Preparedness

Integrated Review in MyLab Math

Updated! Videos

Updated! MyNotes and MyClassroomExamples

New! Enhanced Sample Assignments

Resources for Success

Instructor Resources

Student Resources

R Review of Basic Concepts

R.1 Fractions, Decimals, and Percents

Lowest Terms of a Fraction

Improper Fractions and Mixed Numbers

Operations with Fractions

Decimals as Fractions

Operations with Decimals

Fractions as Decimals

Percents as Decimals and Decimals as Percents

Percents as Fractions and Fractions as Percents

Concept Preview

Concept Preview

R.2 Sets and Real Numbers

Basic Definitions

Operations on Sets

Sets of Numbers and the Number Line

Concept Preview

Concept Preview

R.3 Real Number Operations and Properties

Order on the Number Line

Absolute Value

Operations on Real Numbers

Exponents

Order of Operations

Properties of Real Numbers

Concept Preview

Concept Preview

R.4 Integer and Rational Exponents

Product Rule for Exponents

Power Rules for Exponents

Zero as an Exponent

Negative Exponents and the Quotient Rule

Rational Exponents

Concept Preview

Concept Preview

R.5 Polynomials

Polynomials

Addition and Subtraction

Multiplication

Division

Check

Concept Preview

Concept Preview

R.6 Factoring Polynomials

Factoring Out the Greatest Common Factor

Check

Check

Factoring by Grouping

Check

Factoring Trinomials

Check

Check

Check

Factoring Binomials

Check

Factoring by Substitution

Factoring Expressions with Negative or Rational Exponents

Check

Concept Preview

Concept Preview

R.7 Rational Expressions

Rational Expressions

Lowest Terms of a Rational Expression

Multiplication and Division

Addition and Subtraction

Complex Fractions

Concept Preview

Concept Preview

R.8 Radical Expressions

Radical Notation

Simplified Radicals

Operations with Radicals

Rationalizing Denominators

Concept Preview

Concept Preview

Concept Preview

Chapter R Test Prep

Key Terms

R.1

R.2

R.3

R.5

R.6

R.7

R.8

New Symbols

Quick Review

Chapter R Review Exercises

Chapter R Test

1 Equations and Inequalities

1.1 Linear Equations

Basic Terminology of Equations

Linear Equations

Identities, Conditional Equations, and Contradictions

Solving for a Specified Variable (Literal Equations)

Concept Preview

Concept Preview

1.2 Applications and Modeling with Linear Equations

Solving Applied Problems

Geometry Problems

Motion Problems

Mixture Problems

Modeling with Linear Equations

Concept Preview

1.3 Complex Numbers

Basic Concepts of Complex Numbers

Operations on Complex Numbers

Concept Preview

Concept Preview

1.4 Quadratic Equations

The Zero-Factor Property

The Square Root Property

Completing the Square

The Quadratic Formula

Solving for a Specified Variable

The Discriminant

Concept Preview

Concept Preview

1.5 Applications and Modeling with Quadratic Equations

Geometry Problems

The Pythagorean Theorem

Height of a Projected Object

Modeling with Quadratic Equations

Concept Preview

1.6 Other Types of Equations and Applications

Rational Equations

Work Rate Problems

Equations with Radicals

Equations with Rational Exponents

Equations Quadratic in Form

Concept Preview

Concept Preview

1.7 Inequalities

Linear Inequalities

Three-Part Inequalities

Quadratic Inequalities

Rational Inequalities

Concept Preview

1.8 Absolute Value Equations and Inequalities

Basic Concepts

Absolute Value Equations

Absolute Value Inequalities

Special Cases

Absolute Value Models for Distance and Tolerance

Concept Preview

Chapter 1 Test Prep

Key Terms

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

New Symbols

Quick Review

Chapter 1 Review Exercises

Chapter 1 Test

2 Graphs and Functions

2.1 Rectangular Coordinates and Graphs

Ordered Pairs

The Rectangular Coordinate System

The Distance Formula

The Midpoint Formula

Equations in Two Variables

Concept Preview

Concept Preview

Concept Check

2.2 Circles

Center-Radius Form

General Form

An Application

Concept Preview

Concept Preview

Concept Preview

2.3 Functions

Relations and Functions

Domain and Range

Determining Whether Relations Are Functions

Function Notation

Increasing, Decreasing, and Constant Functions

Concept Preview

2.4 Linear Functions

Basic Concepts of Linear Functions

Standard Form Ax+By=C

Slope

Average Rate of Change

Linear Models

Concept Preview

Concept Preview

2.5 Equations of Lines and Linear Models

Point-Slope Form

Slope-Intercept Form

Vertical and Horizontal Lines

Parallel and Perpendicular Lines

Modeling Data

Graphical Solution of Linear Equations in One Variable

Concept Preview

Concept Preview

2.6 Graphs of Basic Functions

Continuity

The Identity, Squaring, and Cubing Functions

The Square Root and Cube Root Functions

The Absolute Value Function

Piecewise-Defined Functions

The Relation x=y2

Concept Preview

2.7 Graphing Techniques

Stretching and Shrinking

Reflecting

Symmetry

Even and Odd Functions

Translations

Concept Preview

2.8 Function Operations and Composition

Arithmetic Operations on Functions

The Difference Quotient

Composition of Functions and Domain

Concept Preview

Concept Preview

Chapter 2 Test Prep

Key Terms

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

New Symbols

Quick Review

Chapter 2 Review Exercises

Chapter 2 Test

3 Polynomial and Rational Functions

3.1 Quadratic Functions and Models

Polynomial Functions

Quadratic Functions

Graphing Techniques

Completing the Square

The Vertex Formula

Quadratic Models

Concept Preview

Concept Preview

3.2 Synthetic Division

Synthetic Division

Remainder Theorem

Potential Zeros of Polynomial Functions

Concept Preview

3.3 Zeros of Polynomial Functions

Factor Theorem

Rational Zeros Theorem

Proof

Number of Zeros

Conjugate Zeros Theorem

Proof

Zeros of a Polynomial Function

Descartes Rule of Signs

Concept Preview

3.4 Polynomial Functions: Graphs, Applications, and Models

Graphs of f(x)=axn

Graphs of General Polynomial Functions

Behavior at Zeros

Turning Points and End Behavior

Graphing Techniques

Intermediate Value and Boundedness Theorems

Proof

Approximations of Real Zeros

Polynomial Models

Concept Preview

3.5 Rational Functions: Graphs, Applications, and Models

The Reciprocal Function f(x)=1x

The Function f(x)=1×2

Asymptotes

Graphing Techniques

Rational Models

Concept Preview

3.6 Polynomial and Rational Inequalities

Polynomial Inequalities

Rational Inequalities

Concept Preview

Concept Preview

Concept Preview

3.7 Variation

Direct Variation

Inverse Variation

Combined and Joint Variation

Concept Preview

Concept Preview

Chapter 3 Test Prep

Key Terms

3.1

3.2

3.3

3.4

3.5

3.6

3.7

New Symbols

Quick Review

Chapter 3 Review Exercises

Chapter 3 Test

4 Inverse, Exponential, and Logarithmic Functions

4.1 Inverse Functions

One-to-One Functions

Inverse Functions

Equations of Inverses

An Application of Inverse Functions to Cryptography

Concept Preview

Concept Preview

4.2 Exponential Functions

Exponents and Properties

Exponential Functions

Exponential Equations

Compound Interest

The Number e and Continuous Compounding

Exponential Models

Concept Preview

Concept Preview

4.3 Logarithmic Functions

Logarithms

Logarithmic Equations

Logarithmic Functions

Properties of Logarithms

Proof

Concept Preview

Concept Preview

Concept Preview

Concept Preview

Concept Preview

4.4 Evaluating Logarithms and the Change-of-Base Theorem

Common Logarithms

Applications and Models with Common Logarithms

Natural Logarithms

Applications and Models with Natural Logarithms

Logarithms with Other Bases

Proof

Concept Preview

4.5 Exponential and Logarithmic Equations

Exponential Equations

Logarithmic Equations

Applications and Models

Concept Preview

Concept Preview

4.6 Applications and Models of Exponential Growth and Decay

The Exponential Growth or Decay Function

Growth Function Models

Decay Function Models

Concept Preview

Concept Preview

Chapter 4 Test Prep

Key Terms

4.1

4.2

4.3

4.4

4.6

New Symbols

Quick Review

Chapter 4 Review Exercises

Chapter 4 Test

5 Trigonometric Functions

5.1 Angles

Basic Terminology

Degree Measure

Standard Position

Coterminal Angles

Concept Preview

5.2 Trigonometric Functions

Trigonometric Functions

Quadrantal Angles

Reciprocal Identities

Signs and Ranges of Function Values

Pythagorean Identities

Quotient Identities

Concept Preview

Concept Preview

5.3 Trigonometric Function Values and Angle Measures

Right-Triangle-Based Definitions of the Trigonometric Functions

Cofunctions

Trigonometric Function Values of Special Angles

Reference Angles

Special Angles as Reference Angles

Determination of Angle Measures with Special Reference Angles

Calculator Approximations of Trigonometric Function Values

Calculator Approximations of Angle Measures

An Application

Concept Preview

Concept Preview

5.4 Solutions and Applications of Right Triangles

Historical Background

Significant Digits

Solving Triangles

Angles of Elevation or Depression

Bearing

Further Applications

Concept Preview

Concept Preview

Chapter 5 Test Prep

Key Terms

5.1

5.2

5.3

5.4

New Symbols

Quick Review

Chapter 5 Review Exercises

Chapter 5 Test

6 The Circular Functions and Their Graphs

6.1 Radian Measure

Radian Measure

Conversions between Degrees and Radians

Arc Length on a Circle

Area of a Sector of a Circle

Concept Preview

Concept Preview

6.2 The Unit Circle and Circular Functions

Circular Functions

Values of the Circular Functions

Determining a Number with a Given Circular Function Value

Linear and Angular Speed

Concept Preview

Concept Preview

6.3 Graphs of the Sine and Cosine Functions

Periodic Functions

Graph of the Sine Function

Graph of the Cosine Function

Techniques for Graphing, Amplitude, and Period

Connecting Graphs with Equations

A Trigonometric Model

Concept Preview

6.4 Translations of the Graphs of the Sine and Cosine Functions

Horizontal Translations

Vertical Translations

Combinations of Translations

A Trigonometric Model

Concept Preview

6.5 Graphs of the Tangent and Cotangent Functions

Graph of the Tangent Function

Graph of the Cotangent Function

Techniques for Graphing

Connecting Graphs with Equations

Concept Preview

6.6 Graphs of the Secant and Cosecant Functions

Graph of the Secant Function

Graph of the Cosecant Function

Techniques for Graphing

Connecting Graphs with Equations

Addition of Ordinates

Concept Preview

6.7 Harmonic Motion

Simple Harmonic Motion

Damped Oscillatory Motion

Concept Preview

Chapter 6 Test Prep

Key Terms

6.1

6.2

6.3

6.4

6.5

6.6

6.7

Quick Review

Chapter 6 Review Exercises

Chapter 6 Test

7 Trigonometric Identities and Equations

7.1 Fundamental Identities

Fundamental Identities

Uses of the Fundamental Identities

Concept Preview

Concept Preview

7.2 Verifying Trigonometric Identities

Strategies

Verifying Identities by Working with One Side

Verifying Identities by Working with Both Sides

Concept Preview

Concept Preview

7.3 Sum and Difference Identities

Cosine Sum and Difference Identities

Cofunction Identities

Sine and Tangent Sum and Difference Identities

Applications of the Sum and Difference Identities

Verifying an Identity

Concept Preview

Concept Preview

7.4 Double-Angle and Half-Angle Identities

Double-Angle Identities

An Application

Product-to-Sum and Sum-to-Product Identities

Half-Angle Identities

Verifying an Identity

Concept Preview

Concept Preview

7.5 Inverse Circular Functions

Review of Inverse Functions

Inverse Sine Function

Inverse Cosine Function

Inverse Tangent Function

Other Inverse Circular Functions

Inverse Function Values

Concept Preview

Concept Preview

7.6 Trigonometric Equations

Linear Methods

Zero-Factor Property Method

Quadratic Methods

Trigonometric Identity Substitutions

Equations with Half-Angles

Equations with Multiple Angles

Applications

Concept Preview

Concept Preview

Concept Preview

7.7 Equations Involving Inverse Trigonometric Functions

Solution for x in Terms of y Using Inverse Functions

Solution of Inverse Trigonometric Equations

Concept Preview

Chapter 7 Test Prep

New Symbols

Quick Review

Chapter 7 Review Exercises

Chapter 7 Test

8 Applications of Trigonometry

8.1 The Law of Sines

Congruency and Oblique Triangles

Derivation of the Law of Sines

Using the Law of Sines

Description of the Ambiguous Case

Area of a Triangle

Concept Preview

Concept Preview

Concept Preview

Concept Check

8.2 The Law of Cosines

Derivation of the Law of Cosines

Using the Law of Cosines

Herons Formula for the Area of a Triangle

Derivation of Herons Formula

Concept Preview

8.3 Geometrically Defined Vectors and Applications

Basic Terminology

The Equilibrant

Incline Applications

Navigation Applications

Concept Preview

Concept Preview

8.4 Algebraically Defined Vectors and the Dot Product

Algebraic Interpretation of Vectors

Operations with Vectors

The Dot Product and the Angle between Vectors

Concept Preview

8.5 Trigonometric (Polar) Form of Complex Numbers; Products and Quotients

The Complex Plane and Vector Representation

Trigonometric (Polar) Form

Converting between Rectangular and Trigonometric Forms

An Application of Complex Numbers to Fractals

Products of Complex Numbers in Trigonometric Form

Quotients of Complex Numbers in Trigonometric Form

Concept Preview

Concept Preview

8.6 De Moivres Theorem; Powers and Roots of Complex Numbers

Powers of Complex Numbers (De Moivres Theorem)

Roots of Complex Numbers

Concept Preview

Concept Preview

8.7 Polar Equations and Graphs

Polar Coordinate System

Graphs of Polar Equations

Conversion from Polar to Rectangular Equations

Classification of Polar Equations

Concept Preview

Concept Preview

Concept Preview

8.8 Parametric Equations, Graphs, and Applications

Basic Concepts

Parametric Graphs and Their Rectangular Equivalents

The Cycloid

Applications of Parametric Equations

Concept Preview

Concept Preview

Chapter 8 Test Prep

Key Terms

8.1

8.2

8.3

8.4

8.5

8.6

8.7

8.8

New Symbols

Quick Review

Chapter 8 Review Exercises

Chapter 8 Test

9 Systems and Matrices

9.1 Systems of Linear Equations

Linear Systems

Substitution Method

Elimination Method

Special Systems

Application of Systems of Equations

Linear Systems with Three Unknowns (Variables)

Application of Systems to Model Data

Concept Preview

9.2 Matrix Solution of Linear Systems

The Gauss-Jordan Method

Special Systems

The Gaussian Elimination Method

Concept Preview

9.3 Determinant Solution of Linear Systems

Determinants

Cofactors

n×n Determinants

Determinant Theorems

Cramers Rule

Concept Preview

9.4 Partial Fractions

Decomposition of Rational Expressions

Distinct Linear Factors

Repeated Linear Factors

Distinct Linear and Quadratic Factors

Repeated Quadratic Factors

Concept Preview

9.5 Nonlinear Systems of Equations

Nonlinear Systems with Real Solutions

Nonlinear Systems with Nonreal Complex Solutions

An Application of Nonlinear Systems

Concept Preview

9.6 Systems of Inequalities and Linear Programming

Linear Inequalities in Two Variables

Nonlinear Inequalities in Two Variables

Systems of Inequalities

Linear Programming

Concept Preview

Concept Preview

9.7 Properties of Matrices

Basic Definitions

Matrix Addition

Special Matrices

Matrix Subtraction

Scalar Multiplication

Matrix Multiplication

An Application of Matrix Algebra

Concept Preview

9.8 Matrix Inverses

Identity Matrices

Multiplicative Inverses

Solution of Systems Using Inverse Matrices

Concept Preview

Chapter 9 Test Prep

Key Terms

9.1

9.2

9.3

9.4

9.5

9.6

9.7

9.8

New Symbols

Quick Review

Chapter 9 Review Exercises

Chapter 9 Test

10 Analytic Geometry

10.1 Parabolas

Conic Sections

Horizontal Parabolas

Geometric Definition and Equations of Parabolas

An Application of Parabolas

10.2 Ellipses

Equations and Graphs of Ellipses

Translated Ellipses

Eccentricity

Applications of Ellipses

Chapter 10 Quiz (Sections 10.110.2)

10.3 Hyperbolas

Equations and Graphs of Hyperbolas

Translated Hyperbolas

Eccentricity

Concept Preview

Concept Preview

10.4 Summary of the Conic Sections

Characteristics

Identifying Conic Sections

Geometric Definition of Conic Sections

Chapter 10 Test Prep

Key Terms

10.1

10.2

10.3

New Symbols

Quick Review

Chapter 10 Review Exercises

Chapter 10 Test

11 Further Topics in Algebra

11.1 Sequences and Series

Sequences

Series and Summation Notation

Summation Properties and Rules

Concept Preview

Concept Preview

11.2 Arithmetic Sequences and Series

Arithmetic Sequences

Arithmetic Series

Concept Preview

Concept Preview

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11.3 Geometric Sequences and Series

Geometric Sequences

Geometric Series

Infinite Geometric Series

Annuities

Concept Preview

Concept Preview

11.4 The Binomial Theorem

A Binomial Expansion Pattern

Pascals Triangle

n-Factorial

Binomial Coefficients

The Binomial Theorem

kth Term of a Binomial Expansion

Concept Preview

11.5 Mathematical Induction

Principle of Mathematical Induction

Proofs of Statements

Generalized Principle of Mathematical Induction

Proof of the Binomial Theorem

Concept Preview

11.6 Basics of Counting Theory

Fundamental Principle of Counting

Permutations

Combinations

Characteristics That Distinguish Permutations from Combinations

Concept Preview

11.7 Basics of Probability

Basic Concepts

Complements and Venn Diagrams

Odds

Compound Events

Binomial Probability

Concept Preview

Chapter 11 Test Prep

Key Terms

11.1

11.2

11.3

11.4

11.6

11.7

New Symbols

Quick Review

Chapter 11 Review Exercises

Chapter 11 Test

Appendices

A Polar Form of Conic Sections

Equations and Graphs

Conversion from Polar to Rectangular Form

B Rotation of Axes

Derivation of Rotation Equations

Application of a Rotation Equation

C Geometry Formulas

Answers to Selected Exercises

To The Student

Chapter R Review of Basic Concepts

R.1 Exercises

R.2 Exercises

R.3 Exercises

R.4 Exercises

R.5 Exercises

R.6 Exercises

R.7 Exercises

R.8 Exercises

Chapter R Review Exercises

Chapter R Test

Chapter 1 Equations and Inequalities

1.1 Exercises

1.2 Exercises

1.3 Exercises

1.4 Exercises

Chapter 1 Quiz

1.5 Exercises

1.6 Exercises

Summary Exercises on Solving Equations

1.7 Exercises

1.8 Exercises

Chapter 1 Review Exercises

Chapter 1 Test

Chapter 2 Graphs and Functions

2.1 Exercises

2.2 Exercises

2.3 Exercises

2.4 Exercises

Chapter 2 Quiz

2.5 Exercises

Summary Exercises on Graphs, Circles, Functions, and Equations

2.6 Exercises

2.7 Exercises

Chapter 2 Quiz

2.8 Exercises

Chapter 2 Review Exercises

Chapter 2 Test

Chapter 3 Polynomial and Rational Functions

3.1 Exercises

3.2 Exercises

3.3 Exercises

3.4 Exercises

Summary Exercises on Polynomial Functions, Zeros, and Graphs

3.5 Exercises

Chapter 3 Quiz

3.6 Exercises

Summary Exercises on Solving Equations and Inequalities

3.7 Exercises

Chapter 3 Review Exercises

Chapter 3 Test

Chapter 4 Inverse, Exponential, and Logarithmic Functions

4.1 Exercises

4.2 Exercises

4.3 Exercises

Summary Exercises on Inverse, Exponential, and Logarithmic Functions

4.4 Exercises

Chapter 4 Quiz

4.5 Exercises

4.6 Exercises

Summary Exercises on Functions: Domains and Defining Equations

Chapter 4 Review Exercises

Chapter 4 Test

Chapter 5 Trigonometric Functions

5.1 Exercises

5.2 Exercises

5.3 Exercises

Chapter 5 Quiz

5.4 Exercises

Chapter 5 Review Exercises

Chapter 5 Test

Chapter 6 The Circular Functions and Their Graphs

6.1 Exercises

6.2 Exercises

6.3 Exercises

6.4 Exercises

Chapter 6 Quiz

6.5 Exercises

6.6 Exercises

Summary Exercises on Graphing Circular Functions

6.7 Exercises

Chapter 6 Review Exercises

Chapter 6 Test

Chapter 7 Trigonometric Identities and Equations

7.1 Exercises

7.2 Exercises

7.3 Exercises

Chapter 7 Quiz

7.4 Exercises

7.5 Exercises

7.6 Exercises

Chapter 7 Quiz

7.7 Exercises

Chapter 7 Review Exercises

Chapter 7 Test

Chapter 8 Applications of Trigonometry

8.1 Exercises

8.2 Exercises

Chapter 8 Quiz

8.3 Exercises

8.4 Exercises

Summary Exercises on Applications of Trigonometry and Vectors

8.5 Exercises

8.6 Exercises

Chapter 8 Quiz

8.7 Exercises

8.8 Exercises

Chapter 8 Review Exercises

Chapter 8 Test

Chapter 9 Systems and Matrices

9.1 Exercises

9.2 Exercises

9.3 Exercises

9.4 Exercises

Chapter 9 Quiz

9.5 Exercises

Summary Exercises on Systems of Equations

9.6 Exercises

9.7 Exercises

9.8 Exercises

Chapter 9 Review Exercises

Chapter 9 Test

Chapter 10 Analytic Geometry

10.1 Exercises

10.2 Exercises

Chapter 10 Quiz

10.3 Exercises

10.4 Exercises

Chapter 10 Review Exercises

Chapter 10 Test

Chapter 11 Further Topics in Algebra

11.1 Exercises

11.2 Exercises

11.3 Exercises

Summary Exercises on Sequences and Series

11.4 Exercises

11.5 Exercises

Chapter 11 Quiz

11.6 Exercises

11.7 Exercises

Chapter 11 Review Exercises

Chapter 11 Test

Appendices

Appendix A Exercises

Appendix B Exercises

Photo Credits

Index

* Marge Lial* (late) was always interested in math; it was her favorite subject in the first grade! Marge’s intense desire to educate both her students and herself has inspired the writing of numerous best-selling textbooks. Marge, who received Bachelor’s and Master’s degrees from

*at Sacramento, was affiliated with American River College. An avid reader and traveler, her travel experiences often found their way into her books as applications, exercise sets, and feature sets. Her interest in archeology led to trips to various digs and ruin sites, producing some fascinating problems for her textbooks involving such topics as the building of Mayan pyramids and the acoustics of ancient ball courts in the Yucatan.*

**California State University**When * John Hornsby* enrolled as an undergraduate at Louisiana State University, he was uncertain whether he wanted to study mathematics education or journalism. His ultimate decision was to become a teacher, but after twenty-five years of teaching at the high school and university levels and fifteen years of writing mathematics textbooks, both of his goals have been realized. His love for both teaching and for mathematics is evident in his passion for working with students and fellow teachers as well. His specific professional interests are recreational mathematics, mathematics history, and incorporating graphing calculators into the curriculum. John’s personal life is busy as he devotes time to his family (wife Gwen, and sons Chris, Jack, and Josh), and has been an avid baseball fan all of his life. John’s other hobbies include numismatics (the study of coins) and record collecting. He loves the music of the 1960s and has an extensive collection of the recorded works of Frankie Valli and the Four Seasons.

A native Midwesterner,* Terry McGinnis* received her Bachelors of Science in Elementary

**Education**with a concentration in Mathematics from Iowa State University. She has taught elementary and middle school mathematics, and developed and implemented the curriculum used with her students. Terry has been involved in college mathematics publishing for over 20 years, working with a variety of authors on textbooks in both developmental mathematics and precalculus. After working behind the scenes on many of the Lial/Hornsby textbooks and supplements for over 10 years, Terry joined Margaret Lial and John Hornsby in 2002 as coauthor of their developmental mathematics series. When not working, Terry enjoys spinning at a local health club, walking, and reading fiction. She is the devoted mother of two sons, Andrew and Tyler.

* Callie Daniels *has always had a passion for learning mathematics and brings that passion into the classroom with her students. She attended the University of the Ozarks where she earned a bachelors degree in Secondary Mathematics Education. She has two masters degrees: one in Applied Mathematics and Statistics from the University of MissouriRolla, the second in Adult Education from the University of MissouriSt. Louis. Her professional interests include improving success in the community college mathematics sequence, using technology to enhance students understanding of

*, and creating materials that support classroom teaching and student understanding. She is able to pursue these interests as a contributor on the Lial Developmental Math series, and a co-author on the Precalculus series.*

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