Consider the function $f(x)=5(x-5{)}^{\frac{2}{3}}.$ For this function there are two important intervals: $(-,A)$ and $(A,)$ where $A$ is a critical number.

$A$ is

For each of the following intervals, tell whether $f(x)$ is increasing or decreasing.

$(-,A)$ : Select an answer

$(A,)$:

For each of the following intervals, tell whether $f(x)$ is concave up or concave down.

$(-,A)$ : Select an answer $vv$

$(A,)$: Select an answer $$