Principles of Economics, 2nd Edition
A.1 Addition and Subtraction
- Examples
- Example 1: Adding Real Numbers with Like Signs
- Example 2: Adding Real Numbers with Unlike Signs
- Example 3: Adding Three or More Real Numbers
- Example 4: Adding Three or More Real Numbers
- Example 5: Finding Additive Inverses
- Example 6: Subtracting Real Numbers
- Example 7: Application: Calculating Change in Value
- Example 8: Application: Calculating Net Change
A.2 Multiplication and Division
- Examples
- Example 1: Multiplying Positive and Negative Real Numbers
- Example 2: Multiplying Two Negative Real Numbers
- Example 3: Multiplying by 0
- Example 4: Dividing Real Numbers
- Example 5: Dividing Fractions and Decimals
- Example 6: Application: Calculating an Average
- Example 7: Application: Calculating an Average
A.3 Order of Operations
A.4 Algebraic Expressions
- Examples
- Example 1: Identifying Like Terms
- Example 2: Combining Like Terms
- Example 3: Evaluating Algebraic Expressions
- Example 4: Simplifying and Evaluating Algebraic Expressions
- Example 5: Simplifying and Evaluating Algebraic Expressions
- Example 7: Translating English Phrases into Algebraic Expressions
- Example 8: Application: Translating English Phrases
A.5 Basics of Percent
- Examples
- Example 1: Changing Fractions with Denominators of 100 to Percents
- Example 2: Changing Decimal Numbers to Percents
- Example 3: Changing Percents to Decimal Numbers
- Example 4: Finding the Amount
- Example 5: Application: Solving Discount Problems
- Example 6: Application: Solving Sales Tax Problems
- Example 7: Application: Solving Commission Problems
- Example 8: Application: Calculating Percent Increase
- Example 9: Application: Calculating Percent Decrease
- Example 10: Application: Calculating Percent of Profit
A.6 Linear Equations
- Examples
- Example 1: Solving Linear Equations of the Form ax + b = cx + d
- Example 2: Solving Linear Equations Involving Decimals
- Example 3: Solving Linear Equations Involving Fractions
- Example 4: Solving Linear Equations Involving Parentheses
- Example 6: Application: Evaluating Formulas
- Example 7: Solving for Different Variables
- Example 9: Solving Systems by Substitution (One Solution)
- Example 10: Solving Systems by Substitution (No Solution)
- Example 11: Solving Systems by Substitution (Infinite Solutions)
- Example 12: Solving Systems by Substitution (Decimal Numbers)
A.7 Graphing
- Examples
- Example 1: Reading a Bar Graph
- Example 2: Reading a Circle Graph
- Example 3: Reading a Line Graph
- Example 4: Plotting Ordered Pairs
- Example 5: Finding Ordered Pairs
- Example 6: Determining Ordered Pairs
- Example 7: Locating Points on the Graph of a Line
- Example 8: Graphing a Linear Equation in Two Variables
- Example 9: Graphing a Linear Equation in Two Variables
- Example 10: Using Intercepts to Graph Linear Equations
- Example 11: Graphing Horizontal Lines
- Example 12: Graphing Vertical Lines
- Example 13: Finding the Slope of a Line
- Example 14: Using Slope and the y-Intercept to Graph a Line
- Example 15: Finding Equations Given the Slope and the y-Intercept
- Example 16: Checking Solutions to Systems (Solution)
- Example 17: Checking Solutions to Systems (Not a Solution)
- Example 18: Solving Systems (One Solution/A Consistent System)
- Example 19: Solving a System that Requires Estimation