Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.1 Inverse Functions - 4.1 Exercises: 89

Answer

$f^{-1}(1000)$ represents the amount of dollars used/spent to build 1000 cars.

Work Step by Step

$f(x)$ represents the number of cars that can be built for $x$ dollars. This means that the inverse function represents the amount of dollars used/spent to build a certain number of cars. Thus, $f^{-1}(1000)$ represents the amount of dollars used/spent to build 1000 cars.
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