Consider the function $f(x) = 7 (x - 2)^{2/3}$. For this function there are two important intervals: $(-\infty, A)$ and $(A,\infty)$ where $A$ is a critical point.
Find $A$
For each of the following intervals, tell whether $f(x)$ is increasing (type in INC) or decreasing (type in DEC).
$(-\infty, A)$:
$(A,\infty)$:
For each of the following intervals, tell whether $f(x)$ is concave up (type in CU) or concave down (type in CD).
$(-\infty, A)$:
$(A,\infty)$: