Principles of Macroeconomics
0.1 Addition and Subtraction
- Examples
- Example 1: Adding Real Numbers with Like Signs
- Example 2: Adding Real Numbers with Unlike Signs
- Example 3: Adding More Than Two 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 Change in Value
- Example 9: Application: Calculating Net Change
- Example 10: Application: Calculating Net Change
0.2 Multiplication and Division
- Examples
- Example 1: Multiplying Positive and Negative Real Numbers
- Example 2: Multiplying Two Negative Real Numbers
- Example 3: Multiplication by
- Example 4: Dividing Real Numbers
- Example 5: Dividing Fractions and Decimals
- Example 6: Application: Calculating an Average
- Example 7: Application: Calculating an Average
- Example 8: Application: Calculating an Average
0.3 Order of Operations
- Examples
- Example 1: Using the Order of Operations with Real Numbers
- Example 2: Using the Order of Operations with Real Numbers
- Example 3: Using the Order of Operations with Real Numbers
- Example 4: Using the Order of Operations with Real Numbers
- Example 6: Using the Order of Operations with Real Numbers
- Example 7: Using the Order of Operations with Real Numbers
0.4 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 6: Simplifying and Evaluating Algebraic Expressions
- Example 8: Translating English Phrases into Algebraic Expressions
- Example 8: Application: Translating English Phrases
0.5 Basics of Percent
- Examples
- Example 1: Changing Fractions with Denominators of 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 Discount Problems
- Example 7: Application: Solving Sales Tax Problems
- Example 8: Application: Solving Commission Problems
- Example 9: Finding the Percent Increase
- Example 10: Finding the Percent Decrease
- Example 11: Application: Calculating Percent of Profit
0.6 Linear Equations
- Examples
- Example 1: Solving Equations of the Form ax + b = cx + d
- Example 2: Solving Equations of the Form ax + b = cx + d
- Example 3: Solving Linear Equations Involving Decimals
- Example 4: Solving Linear Equations Involving Fractions
- Example 5: Solving Equations Involving Parentheses
- Example 6: Solving Equations Involving Parentheses
- Example 8: Application: Evaluating Formulas
- Example 9: Evaluating Formulas
- Example 10: Solving for Different Variables
- Example 11: Solving for Different Variables
- Example 12: Solving for Different Variables
- Example 14: Solving Systems by Substitution (One Solution)
- Example 15: Solving Systems by Substitution (One Solution)
- Example 16: Solving Systems by Substitution (No Solution)
- Example 17: Solving Systems by Substitution (Infinite Solutions)
- Example 18: Solving Systems by Substitution (Decimal Numbers)
0.7 Graphing
- Examples
- Example 1: Reading a Bar Graph
- Example 2: Reading a Circle Graph
- Example 3: Reading a Line Graph
- Example 4: Reading a Histogram
- Example 5: Plotting Ordered Pairs
- Example 6: Plotting Ordered Pairs
- Example 7: Finding Ordered Pairs
- Example 8: Finding Ordered Pairs
- Example 10: Locating Points on the Graph of a Line
- Example 11: Graphing a Linear Equation in Two Variables
- Example 12: Graphing a Linear Equation in Two Variables
- Example 13: Graphing a Linear Equation in Two Variables
- Example 14: Using Intercepts to Graph Linear Equations
- Example 15: Using Intercepts to Graph Linear Equations
- Example 17: Graphing Horizontal Lines
- Example 18: Graphing Vertical Lines
- Example 19: Finding the Slope of a Line
- Example 20: Finding the Slope of a Line
- Example 21: Finding the Slope of a Horizontal Line
- Example 22: Finding the Slope of a Vertical Line
- Example 23: Using Slope and the y‑Intercept to Graph a Line
- Example 24: Using Slope and the y-Intercept to Graph a Line
- Example 25: Finding Equations Given the Slope and the y‑Intercept
- Example 26: Checking Solutions to Systems (Solution)
- Example 27: Checking Solutions to Systems (Not a Solution)
- Example 28: Solving Systems (One Solution/A Consistent System)
- Example 29: Solving Systems (No Solution/An Inconsistent System)
- Example 30: Solving Systems (Infinite Solutions/A Dependent System)
- Example 31: Solving a System that Requires Estimation