Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 7 - Exponents and Exponential Functions - Chapter Test - Page 467: 20

Answer

a) .15 is the decay factor. Every year, the car loses 15% of its value. b) 25,500 c) 15,660.19

Work Step by Step

a) $1-.85=.15$ b) $y=30000*.85^x$ $y=30000*.85^1$ $y=30000*.85 = 25500$ c) $y=30000*.85^x$ $y=30000*.85^4$ $y=30000*.5220062$ $y=15660.19$
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