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The purpose of this activity is for students to explore the use of rational equations to solve practical problems. This activity uses the standard bookstore formula for calculating the price of textbooks and materials. This is not the standard simple percent increase that most textbooks use. Formulas have been submitted by the Mesa College bookstore. In addition, the student is given the formula for calculating the monthly payments on a loan.
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When determining the monthly rate by dividing the annual rate by 12, you may wish to decide if you will accept an approximation for the rate or if you want the students to use the fraction. (.065/12 or .0054) Both answers are given in the key.
Follow Up/ Discussion Questions:
* Students may research the monthly payments on the car of their choice.
* Students can calculate the cost of their books based on the % increase used by their college bookstore.