Consider the function $f(x) = 7 (x - 2)^{2/3}$.
This function has a critical number $A =$
For each of the following intervals, tell whether $f'(x)$ is positive (type in $+$) or negative (type in $-$).
$(-\infty, A)$:
$(A,\infty)$:
Thus $f(x)$ has a local at $A$ (type in MAX or MIN).