Image from Prealgebra textbook, Chapter 6.3: Solve Sales Tax, Commission, and Discount Applications

Introduction to this week's module:

Module 09 presents many applications involving rates, percents, ratios, and proportions. The applications often involve shifting between one mathematical expression to another depending on one's purpose, so it builds on both Module 07 and Module 08. Please note that the only required homework submission for Module 09 is listed below, but Test 04 will follow the conclusion of Module 09. You are also encouraged to do practice problems in the readings. The practice problems include solutions and explanations in the readings.

To meet the learning outcomes in this module, students are expected to complete the following:

Reading
- Chapter 6
  - Chapter 6.3: Solve Sales Tax, Commission, and Discount Applications
  - Chapter 6.4: Solve Simple Interest Applications
  - Chapter 6.5: Solve Proportions and Their Applications
- Supplemental Reading: Direct and Inverse Variation
  - Elementary Algebra text, Chapter 8.9: Direct and Inverse Variation
Graded Assignments

Note that at the end of this module, you will be ready for Test 04.