QuestionSuppose functions $f$ and $g$ are defined as follows. \begin{tabular}{ccc} \hline$x$ & $f(x)$ & $g(x)$ \\ \hline 1 & 3 & 3 \\ 2 & 5 & 4 \\ 3 & 6 & 1 \\ 4 & 7 & 5 \\ 5 & 4 & 2 \\ \hline \end{tabular}
That is, $f(1)=3, g(1)=3, f(2)=5, g(2)=4$, and so on. (a) Evaluate $f^{-1}$ (7). (2 Points)