Section 2.5 Applications Involving Percents 143 Step 3: Write a verbal model. aOriginal 1discount2 b 0.38 868 Step 4: Write a mathematical equation.The discount is a percent of the original amount. Step 5: Solve the equation. Combine like terms. Divide by 0.62. x 0.38x 868 0.62x 868 0.62x 0.62 x 1400 The original cost of the treadmill Step 6: Interpret the result. was $1400. Skill Practice 6. An iPod is on sale for $151.20.This is after a 20% discount.What was the original cost of the iPod? 868 0.62 x 1x2 a sale price cost b Answer 6. The iPod originally cost $189. Section 2.5 Practice Exercises Study Skills Exercise It is always helpful to read the material in a section and make notes before it is presented in class. Writing notes ahead of time will free you to listen more in class and to pay special attention to the concepts that need clarification. Refer to your class syllabus and identify the next two sections that will be covered in class.Then determine a time when you can read these sections before class. Vocabulary and Key Concepts 1. a. Interest that is earned on principal is called interest. b. 82% means 82 out of . Review Exercises For Exercises 2–4, use the steps for problem solving to solve these applications. 2. The difference of four times a number and 17 is 5 less than the number. Find the number. 3. Find two consecutive integers such that three times the larger is the same as 45 more than the smaller. 4. The height of the Great Pyramid of Giza is 17 m more than twice the height of the pyramid found in Saqqara. If the difference in their heights is 77 m, find the height of each pyramid.
miller_beginning_intermediate_algebra_4e_ch1_3
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