Page 119

miller_introductory_algebra_3e_ch1_3

Section 2.5 Applications Involving Percents 161 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. For additional exercises, see Classroom Activities 2.5A–2.5D in the Student’s Resource Manual at www.mhhe.com/moh. Vocabulary and Key Concepts 1. a. Interest that is earned on principal is called interest. b. 82% means 82 out of . Review Exercises 2. List the six steps to solve an application. See page 147. For Exercises 3 and 4, use the steps for problem solving to solve these applications. 3. Find two consecutive integers such that three times the larger is the same as 45 more than the smaller. The numbers are 21 and 22. 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. The pyramid at Saqqara is 60 m high, and the Great Pyramid is 137 m high. Concept 1: Solving Basic Percent Equations For Exercises 5–16, find the missing values. 5. 45 is what percent of 360? 6. 338 is what percent of 520? 7. 544 is what percent of 640? 8. 576 is what percent of 800? 9. What is 0.5% of 150? 10. What is 9.5% of 616? 11. What is 142% of 740? 12. What is 156% of 280? 13. 177 is 20% of what number? 14. 126 is 15% of what number? 15. 275 is 12.5% of what number? 16. 594 is 45% of what number? 17. A Craftsman drill is on sale for $99.99. If 12.5% 65% 85% 72% 0.75 58.52 1050.8 436.8 885 840 2200 1320 the sales tax rate is 7%, how much will Molly have to pay for the drill? (See Example 1.) Molly will have to pay $106.99. 18. Patrick purchased four new tires that were regularly priced at $94.99 each, but are on sale for $20 off per tire. If the sales tax rate is 6%, how much will be charged to Patrick’s VISA card? Patrick will have to pay $317.96. For Exercises 19 and 20, use the graph showing the distribution for leading forms of cancer in men. (Source: Centers for Disease Control) 19. If there are 700,000 cases of cancer in men in the United States, approximately how many are prostate cancer? Approximately 231,000 cases 20. Approximately how many cases of lung cancer would be expected in 700,000 cancer cases among men in the United States? Approximately 91,000 cases 21. There were 14,000 cases of cancer of the pancreas diagnosed out of 700,000 cancer cases.What percent is this? (See Example 2.) 2% Percent of Cancer Cases by Type (Men) Bladder 6% 22. There were 21,000 cases of leukemia diagnosed out of 700,000 cancer cases.What percent is this? 3% Lung Colon 13% 11% All other sites 33% Melanoma 4% Prostate 33% simple 100 Writing     Translating Expression     Geometry      Scientific Calculator     Video


miller_introductory_algebra_3e_ch1_3
To see the actual publication please follow the link above