Inverse Functions · Try It 5

Using the table, find and interpret (a) $f\left(60\right),$ and (b) $f^{-1}\left(60\right).$

$$\begin{array}{cccccc}t(\text{minutes})& \text{30}& \text{50}& \text{60}& \text{70}& \text{90}\\ f\left(t\right)(\text{miles})& \text{20}& \text{40}& \text{50}& \text{60}& \text{70}\end{array}$$

OpenStax, Precalculus 2e · §1.7 Inverse Functions · Try It 5