Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 7 - Exponents and Exponential Functions - Chapter Test - Page 479: 20


A)0.85 B)$25,500 C)15,600

Work Step by Step

A)The decay factor is 0.85 which means the car's value decreases by 15% per year. ---B)Car's value after 1 year: y=30000(0.85$)^{1}$ y=25,500 The car's value after 1 years is 25,500 C)Car's value after 4 years: y=30000(0.85$)^{4}$ y=15660.19 The car's value after 4 years is 15,660.19
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