Practice - McGraw-Hill Higher Education
Practice - McGraw-Hill Higher Education Practice - McGraw-Hill Higher Education
9-6NAME ______________________________________________ DATE______________ PERIOD _____PracticeGrowth and DecayCOMMUNICATIONS For Exercises 1 and 2, use the following information.Sports radio stations numbered 220 in 1996.1. Write an equation for the number of sports radio stations for t years after 1996.2. If the trend continues, predict the number of sports radio stations in this format for theyear 2010.Lesson 9-63. INVESTMENTS Determine the amount of an investment if $500 is invested at aninterest rate of 4.25% compounded quarterly for 12 years.4. INVESTMENTS Determine the amount of an investment if $300 is invested at aninterest rate of 6.75% compounded semiannually for 20 years.5. HOUSING The Greens bought a condominium for $110,000 in 2005. If its valueappreciates at an average rate of 6% per year, what will the value be in 2010?DEFORESTATION For Exercises 6 and 7, use the following information.During the 1990s, the forested area of Guatemala decreased at an average rate of 1.7%.Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.6. If the forested area in Guatemala in 1990 was about 34,400 square kilometers, write anequation for the forested area for t years after 1990.7. If this trend continues, predict the forested area in 2015.8. BUSINESS A piece of machinery valued at $25,000 depreciates at a steady rate of 10%yearly. What will the value of the piece of machinery be after 7 years?9. TRANSPORTATION A new car costs $18,000. It is expected to depreciate at an averagerate of 12% per year. Find the value of the car in 8 years.10. POPULATION The population of Osaka, Japan declined at an average annual rateof 0.05% for the five years between 1995 and 2000. If the population of Osaka was11,013,000 in 2000 and it continues to decline at the same rate, predict the populationin 2050.Chapter 9 45 Glencoe Algebra 1
NAME ______________________________________________ DATE______________ PERIOD _____10-1 PracticeSimplifying Radical ExpressionsSimplify.1. 24 2. 603. 108 4. 8 65. 7 14 6. 312 567. 43 318 8. 27su 39. 50p 510. 108x y 6 4 z 511. 56m 2 n4 o 512.213. 103 415. 4 58 6514. 321 716. 11 7Lesson 10-1Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.3k17. 81818. x34y19. 3y29ab20. 4ab43821. 22. 5 23 353723. 24. 7 3 1 2725. SKY DIVING When a skydiver jumps from an airplane, the time t it takes to free fall a2sgiven distance can be estimated by the formula t , where t is in seconds and s is in9.8meters. If Julie jumps from an airplane, how long will it take her to free fall 750 meters?METEOROLOGY For Exercises 26 and 27, use the following information.To estimate how long a thunderstorm will last, meteorologists can use the formuladt , 3where t is the time in hours and d is the diameter of the storm in miles.21626. A thunderstorm is 8 miles in diameter. Estimate how long the storm will last. Give youranswer in simplified form and as a decimal.27. Will a thunderstorm twice this diameter last twice as long? Explain.Chapter 10 9 Glencoe Algebra 1
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NAME ______________________________________________ DATE______________ PERIOD _____10-1 <strong>Practice</strong>Simplifying Radical ExpressionsSimplify.1. 24 2. 603. 108 4. 8 65. 7 14 6. 312 567. 43 318 8. 27su 39. 50p 510. 108x y 6 4 z 511. 56m 2 n4 o 512.213. 103 415. 4 58 6514. 321 716. 11 7Lesson 10-1Copyright © Glencoe/<strong>McGraw</strong>-<strong>Hill</strong>, a division of The <strong>McGraw</strong>-<strong>Hill</strong> Companies, Inc.3k17. 81818. x34y19. 3y29ab20. 4ab43821. 22. 5 23 353723. 24. 7 3 1 2725. SKY DIVING When a skydiver jumps from an airplane, the time t it takes to free fall a2sgiven distance can be estimated by the formula t , where t is in seconds and s is in9.8meters. If Julie jumps from an airplane, how long will it take her to free fall 750 meters?METEOROLOGY For Exercises 26 and 27, use the following information.To estimate how long a thunderstorm will last, meteorologists can use the formuladt , 3where t is the time in hours and d is the diameter of the storm in miles.21626. A thunderstorm is 8 miles in diameter. Estimate how long the storm will last. Give youranswer in simplified form and as a decimal.27. Will a thunderstorm twice this diameter last twice as long? Explain.Chapter 10 9 Glencoe Algebra 1
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