For each of the following, find the inverse $f^{-1}(x)$ of the function. You can assume that $f:\textbf{R}\longrightarrow\textbf{R}$. If there is no inverse, enter -1.

Hint: you can write $\sqrt{x}$ as x carat (1/2) where carat is shift-6 on most keyboards. The inverse of $f(x) = \frac{x+3}{6}$ is

The inverse of $f(x) = 3x+7$ is

The inverse of $f(x) = 8x$ is

The inverse of $f(x) = x^2$ is

The inverse of $f(x) = x^\frac{1}{3}$ is

The inverse of $f(x) = x^5$ is