Answer
Domain of $f^{-1}(y): 1 \leq$ y$\leq 4.5$
Work Step by Step
The domain of $f^{-1}(y)$ is the range of $f(x)$, that is, all numbers between 1 and about 4.5. Thus, we estimate:
Domain of $f^{-1}(y): 1 \leq$ y$\leq 4.5$.
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