Algebra 1

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

Chapter 7 - Exponents and Exponential Functions - 7-7 Exponential Growth and Decay - Practice and Problem-Solving Exercises - Page 460: 33


No, because the value of the car would be about $5242, which means they would be selling the car for less than it was worth.

Work Step by Step

The equation for determining the car's value will look like this: f(x) = 20,000(1-0.2)$^{x}$ To find how much the car would be worth after years, plug in 6 for x: f(x) = 20,000(1-0.2)$^{x}$ f(6) = 20,000(1-0.2)$^{6}$ f(6) = 20,000(0.8)$^{6}$ f(6) = 20,000(0.262144) f(6) = 5242.88 $\approx$ $5243
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