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Original Essays | September 15, 2014

Lois Leveen: IMG Forsooth Me Not: Shakespeare, Juliet, Her Nurse, and a Novel

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Intermediate Algebra: Functions & Authentic Applications


Intermediate Algebra: Functions & Authentic Applications Cover


Synopses & Reviews

Publisher Comments:

Unique in its approach, the Lehmann Algebra Series uses curve fitting to model compelling, authentic situations, while answering the perennial question “But what is this good for?” Lehmann begins with interesting data sets, and then uses the data to find models and derive equations that fit the scenario. This interactive approach to the data helps readers connect concepts and motivates them to learn. The curve-fitting approach encourages readers to understand functions graphically, numerically, and symbolically. Because of the multi-faceted understanding that they gain, readers are able to verbally describe the concepts related to functions.


  • Solutions to the odd-numbered section exercises
  • Solutions to the Quick Check exercises
  • Solutions to the Preparing for this Section, Putting the Concepts Together (mid-chapter review), Chapter Review, Chapter Test, Cumulative Review, and Math for the Future exercises.

About the Author

In the words of the Author -

            Before writing my algebra series, it was painfully apparent that my students couldn't relate to the applications in the course. I was plagued with the question, "What is this good for?" To try to bridge that gap, I wrote some labs, which facilitated my students in collecting data, finding models via curve fitting, and using the models to make estimates and predictions. My students really loved working with the current, compelling, and authentic data and experiencing how mathematics truly is useful.

            My students' response was so strong that I decided to write an algebra series. Little did I know that to realize this goal, I would need to embark on a 15-year challenging journey, but the rewards of hearing such excitement from students and faculty across the country has made it all worthwhile! I'm proud to have played even a small role in raising peoples' respect and enthusiasm for mathematics.

            I have tried to honor my inspiration: by working with authentic data, students can experience the power of mathematics. A random-sample study at my college suggests that I am achieving this goal. The study concludes that students who used my series were more likely to feel that mathematics would be useful in their lives (P-value 0.0061) as well as their careers (P-value 0.024).

            In addition to curve fitting, my approach includes other types of meaningful modeling, directed-discovery explorations, conceptual questions, and of course, a large bank of skill problems. The curve-fitting applications serve as a portal for students to see the usefulness of mathematics so that they become fully engaged in the class. Once involved, they are more receptive to all aspects of the course.

Table of Contents

1. Linear Equations and Linear Functions

1.1 Using Qualitative Graphs to Describe Situations

1.2 Graphing Linear Equations

1.3 Slope of a Line

1.4 Meaning of Slope for Equations, Graphs, and Tables

1.5 Finding Linear Equations

1.6 Functions

Chapter Summary

Key Points of Chapter 1

Chapter 1 Review Exercises

Chapter 1 Test


2. Modeling with Linear Functions

2.1 Using Lines to Model Data

2.2 Finding Equations of Linear Models

2.3 Function Notation and Making Predictions

2.4 Slope Is a Rate of Change

Chapter Summary

Key Points of Chapter 2

Chapter 2 Review Exercises

Chapter 2 Test


3. Systems of Linear Equations

3.1 Using Graphs and Tables to Solve Systems

3.2 Using Substitution and Elimination to Solve Systems

3.3 Using Systems to Model Data

3.4 Value, Interest, and Mixture Problems

3.5 Using Linear Inequalities in One Variable to Make Predictions

Chapter Summary

Key Points of Chapter 3

Chapter 3 Review Exercises

Chapter 3 Test

Cumulative Review of Chapters 1—3


4. Exponential Functions

4.1 Properties of Exponents

4.2 Rational Exponents

4.3 Graphing Exponential Functions

4.4 Finding Equations of Exponential Functions

4.5 Using Exponential Functions to Model Data

Chapter Summary

Key Points of Chapter 4

Chapter 4 Review Exercises

Chapter 4 Test


5. Logarithmic Functions

5.1 Inverse Functions

5.2 Logarithmic Functions

5.3 Properties of Logarithms

5.4 Using the Power Property with Exponential Models to Make Predictions

5.5 More Properties of Logarithms

5.6 Natural Logarithms

Chapter Summary

Key Points of Chapter 5

Chapter 5 Review Exercises

Chapter 5 Test

Cumulative Review of Chapters 1—5



6. Polynomial Functions

6.1 Adding and Subtracting Polynomial Expressions and Functions       

6.2 Multiplying Polynomial Expressions and Functions

6.3 Factoring Trinomials of the Form x2 + bx + c; Factoring out the GCF

6.4 Factoring Polynomials

6.5 Factoring Special Binomials; A Factoring Strategy

6.6 Using Factoring to Solve Polynomial Equations

Chapter Summary

Key Points of Chapter 6

Chapter 6 Review Exercises

Chapter 6 Test


7. Quadratic Functions

7.1 Graphing Quadratic Functions in Vertex Form

7.2 Graphing Quadratic Functions in Standard Form

7.3 Using the Square Root Property to Solve Quadratic Equations

7.4 Solving Quadratic Equations by Completing the Square

7.5 Using the Quadratic Formula to Solve Quadratic Equations

7.6 Solving Systems of Linear Equations in Three Variables; Finding Quadratic Functions

7.7 Finding Quadratic Models

7.8 Modeling with Quadratic Functions

Chapter Summary

Key Points of Chapter 7

Chapter 7 Review Exercises

Chapter 7 Test

Cumulative Review of Chapters 1—7


8. Rational Functions

8.1 Finding the Domains of Rational Functions and Simplifying

Rational Expressions

8.2 Multiplying and Dividing Rational Expressions

8.3 Adding and Subtracting Rational Expressions

8.4 Simplifying Complex Rational Expressions

8.5 Solving Rational Equations

8.6 Modeling with Rational Functions

8.7 Variation

Chapter Summary

Key Points of Chapter 8

Chapter 8 Review Exercises

Chapter 8 Test


9. Radical Functions

9.1 Simplifying Radical Expressions

9.2 Adding, Subtracting, and Multiplying Radical Expressions

9.3 Rationalizing Denominators and Simplifying Quotients of Radical Expressions

9.4 Graphing and Combining Square Root Functions

9.5 Solving Radical Equations

9.6 Modeling with Square Root Functions

Chapter Summary

Key Points of Chapter 9

Chapter 9 Review Exercises

Chapter 9 Test


10. Sequences and Series

10.1 Arithmetic Sequences

10.2 Geometric Sequences

10.3 Arithmetic Series

10.4 Geometric Series

Chapter Summary

Key Points of Chapter 10

Chapter 10 Review Exercises

Chapter 10 Test

Cumulative Review of Chapters 1—10


11. Additional Topics

11.1 Absolute Value: Equations and Inequalities

Key Points of Section 11.1

11.2 Linear Inequalities in Two Variables; Systems of Linear Inequalities

Key Points of Section 11.2

11.3 Performing Operations with Complex Numbers

Key Points of Section 11.3

11.4 Pythagorean Theorem, Distance Formula, and Circles

Key Points of Section 11.4

11.5 Ellipses and Hyperbolas

Key Points of Section 11.5

11.6 Solving Nonlinear Systems of Equations

Key Points of Section 11.6


A. Reviewing Prerequisite Material

A.1 Plotting Points

A.2 Identifying Types of Numbers

A.3 Absolute Value

A.4 Performing Operations with Real Numbers

A.5 Exponents

A.6 Order of Operations

A.7 Constants, Variables, Expressions, and Equations

A.8 Distributive Law

A.9 Combining Like Terms

A.10 Solving Linear Equations in One Variable

A.11 Solving Equations in Two or More Variables

A.12 Equivalent Expressions and Equivalent Equations


B Using a TI-83 or TI-84 Graphing Calculator

B.1 Turning a Graphing Calculator On or Off

B.2 Making the Screen Lighter or Darker

B.3 Entering an Equation

B.4 Graphing an Equation

B.5 Tracing a Curve without a Scattergram

B.6 Zooming

B.7 Setting the Window Format

B.8 Plotting Points in a Scattergram

B.9 Tracing a Scattergram

B.10 Graphing Equations with a Scattergram

B.11 Tracing a Curve with a Scattergram

B.12 Turning a Plotter On or Off

B.13 Creating a Table

B.14 Creating a Table for Two Equations

B.15 Using “Ask” in a Table

B.16 Finding the Regression Curve for Some Data

B.17 Plotting Points in Two Scattergrams

B.18 Finding the Intersection Point(s) of Two Curves

B.19 Finding the Minimum Point(s) or Maximum Point(s) of a Curve

B.20 Storing a Value

B.21 Finding Any x-Intercepts of a Curve

B.22 Turning an Equation On or Off

B.23 Finding Coordinates of Points

B.24 Graphing Equations with Axes “Turned Off”

B.25 Entering an Equation by Using Yn References

B.26 Responding to Error Messages


Product Details

Lehmann, Jay
Academic Internet Publishers
Cram101 Textbook Reviews
Algebra - Elementary
Algebra - General
Edition Number:
Edition Description:
Trade paper
Publication Date:
Grade Level:
College/higher education:
11.14x8.36x1.09 in. 3.62 lbs.

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Intermediate Algebra: Functions & Authentic Applications Used Hardcover
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Product details 720 pages Prentice Hall - English 9780131953338 Reviews:
"Synopsis" by ,
  • Solutions to the odd-numbered section exercises
  • Solutions to the Quick Check exercises
  • Solutions to the Preparing for this Section, Putting the Concepts Together (mid-chapter review), Chapter Review, Chapter Test, Cumulative Review, and Math for the Future exercises.
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