[eBook Code] The Official ACT Mathematics Guide (eBook Code, 2nd)

Introduction vii

Chapter 1: The ACT Math Test 1

Reporting Categories: Score Reporting 2

Reporting Categories: Topic Overview 2

Chapter 2: Number and Quantity 5

Real and Complex Number Systems 5

Number Line and Absolute Value 6

Exponents 17

Imaginary and Complex Numbers 21

Vectors 25

Matrices 28

Chapter 2: Quiz Answers 33

Chapter 3: Algebra 37

Scientific Notation 37

Equations 39

Linear Equations 45

System of Equations 48

Roots 61

Logarithmic Equations 65

Chapter 3: Quiz Answers 66

Chapter 4: Functions 73

Series, Sequences, and Consecutive Numbers 73

Slope-Intercept Form of a Linear Equation 76

Chapter 4: Quiz Answers 84

Chapter 5: Geometry 87

Coordinate Geometry 87

Lines and Angles 88

Two-Dimensional Shapes 91

Three-Dimensional Shapes 116

Trigonometry 121

Chapter 5: Quiz Answers 131

Chapter 6: Statistics and Probability 139

Probability 139

Sets of Numbers 141

Charts 144

Chapter 6: Quiz Answers 146

Chapter 7: Practice Questions 149

Chapter 8: Answers and Explanations 259

Answer Key 260

Explanatory Answers 262