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Answer Key Practice B 1. Distance traveled 100 miles Rate of travel 763 miles per hour Time traveled t 2. 100 763t 3. About 0.131 4. About 0.131 hour or about 7.86 minutes 5. 6. Total cost $450 Price per square yard x Number of square yards 30 square yards 7. 450 30x 8. 15 9. $15 per square yard 10. Your speed 11. Distance traveled 300 miles Your speed r Your time 3 hours Friend’s speed 52 miles per hour Friend’s time 3 hours 12. 300 3r 156 13. 48 14. 48 miles per hour 15. Total time Total cost Distance traveled Your time Time per trial Price per square yard Friend’s speed Number of trials Friend’s time 16. Total time 1 hours or 90 minutes Time per trial 5 minutes Number of trials x Time to write report 30 minutes 17. 90 5x 30 18. 12 19. 12 trials 1 2 Number of square yards Time to write report
LESSON 1.5 Copyright © McDougal Littell Inc. All rights reserved. NAME _________________________________________________________ DATE ___________ Practice B For use with pages 33–40 Land Speed Record In Exercises 1–4, use the following information. The land speed record was broken in 1997 by a British car called the Thrust SSC. The Thrust SSC traveled at a rate of 763 miles per hour. This was accomplished by using a jet engine. How long would it take the Thrust SSC to travel 100 miles? Use the following verbal model. Distance Rate Time 1. Assign labels to the parts of the verbal model. 2. Use the labels to translate the verbal model into an algebraic model. 3. Solve the algebraic model. 4. Answer the question. New Carpeting In Exercises 5–9, use the following information. You just added a family room to your home. You have budgeted $450 for carpeting. If you need 30 square yards of carpeting, how much can you spend per square yard? 5. Write a verbal model. 6. Assign labels to the parts of the verbal model. 7. Use the labels to translate the verbal model into an algebraic model. 8. Solve the algebraic model. 9. Answer the question. Sharing the Driving In Exercises 10–14, use the following information. You and a friend share the driving on a 300 mile trip. Your friend drives for 3 hours at an average speed of 52 miles per hour. How fast must you drive for the remainder of the trip if you want to reach your hotel in 3 more hours? 10. Write a verbal model. 11. Assign labels to the parts of the verbal model. 12. Use the labels to translate the verbal model into an algebraic model. 13. Solve the algebraic model. 14. Answer the question. Time Management In Exercises 15–19, use the following information. You need to do an experiment at home for your science class and write a lab report on your findings. The experiment involves trials that take 5 minutes each to perform. You want to watch a basketball game that starts in 1 hours. If it takes about 30 minutes to write the lab report, how many trials can you perform before the game starts? 15. Write a verbal model. 16. Assign labels to the parts of the verbal model. 17. Use the labels to translate the verbal model into an algebraic model. 18. Solve the algebraic model. 19. Answer the question. 1 2 Algebra 2 69 Chapter 1 Resource Book Lesson 1.5
Page 1 and 2: Answer Key Cumulative Review 1. 2.
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