Inverse Functions · Exercise 40

Use the values listed in the table to evaluate or solve.
$$\begin{array}{ccccccccccc}x& \text{0}& \text{1}& \text{2}& \text{3}& \text{4}& \text{5}& \text{6}& \text{7}& \text{8}& \text{9}\\ f\left(x\right)& \text{8}& \text{0}& \text{7}& \text{4}& \text{2}& \text{6}& \text{5}& \text{3}& \text{9}& \text{1}\end{array}$$

Solve $f^{-1}\left(x\right)=7.$

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Precalculus 2e · §1.7 Inverse Functions · Exercise 40