Answer
True.
Work Step by Step
True.
The rates of change are increasing:
$$
\begin{aligned}
& \frac{f(0)-f(-2)}{0-(-2)}=\frac{6-5}{2}=\frac{1}{2} . \\
& \frac{f(2)-f(0)}{2-0}=\frac{8-6}{2}=1 . \\
& \frac{f(4)-f(2)}{4-2}=\frac{12-8}{2}=2 .
\end{aligned}
$$
