Preface............................................................................................................................................ 4
저자소개.......................................................................................................................................... 5
Digital SAT Math Section 개요.................................................................................................... 6
Digital SAT Math for 800 공부법................................................................................................ 7

Chapter 1 Linear function and Exponential function.....................................................11

1.1 Linear function.........................................................................................................12
1.2 Exponential Function..............................................................................................14
1.3 Exponential Modeling.............................................................................................16
1.4 System of linear equations....................................................................................17
1.5 Inequalities................................................................................................................19
1.6 Absolute Value Equation.......................................................................................20
1.7 Chapter 1 from A to Z Problems.........................................................................23
1.8 Explanation...............................................................................................................32

Chapter 2 Quadratic function and Polynomial function................................................35

2.1 Quadratic function...................................................................................................36
2.2 Complex number.....................................................................................................39
2.3 Polynomial Function................................................................................................41
2.4 Chapter 2 from A to Z Problems.........................................................................48
2.5 Explanation...............................................................................................................56

Chapter 3 Radical expressions and Equations..............................................................59

3.1 Exponents and Radicals........................................................................................60
3.2 Radical equations....................................................................................................61
3.3 Chapter 3 from A to Z Problems.........................................................................63
3.4 Explanation...............................................................................................................68

Chapter 4 Percent................................................................................................................71

4.1 Percent......................................................................................................................72
4.2 Rate............................................................................................................................75
4.3 Unit conversion-Squared units and Cubic units..............................................77
4.4 Chapter 4 from A to Z Problems.........................................................................80
4.5 Explanation...............................................................................................................88

Chapter 5 Word Problem ..................................................................................................91

5.1 3 Types of Word Problems...................................................................................92
5.2 Chapter 5 from A to Z Problems.........................................................................94
5.3 Explanation.............................................................................................................101

Chapter 6 Probability ........................................................................................................105

6.1 Probablity................................................................................................................106
6.2 Chapter 6 from A to Z Problems.......................................................................110
6.3 Explanation.............................................................................................................116

Chapter 7 Geometry .........................................................................................................119

7.1 Fundamental Geometric formulas......................................................................120
7.2 Angle Relationship................................................................................................125
7.3 Properties of Triangle...........................................................................................126
7.4 Similarity...................................................................................................................129
7.5 Trigonometry..........................................................................................................133
7.6 Circle........................................................................................................................136
7.7 Properties of Circle................................................................................................136
7.8 Chapter 7 from A to Z Problems-Part 1.Triangle and Polygon......................... 140
7.9 Chapter 7 from A to Z Problems-Part 2. Circle.............................................148
7.10 Explanation...........................................................................................................154

Chapter 8 Statistics ...........................................................................................................159

8.1 Describing Distributions with Numbers.............................................................160
8.2 Box and Whiskers Plot.........................................................................................164
8.3 Distribution, Population and Sample..................................................................165
8.4 Observational Study and Experiment................................................................168
8.5 Regression Analysis.............................................................................................170
8.6 Chapter 8 from A to Z Problems.......................................................................174
8.7 Explanation.............................................................................................................185

Chapter 9 Practice Tests .................................................................................................189