Answer
(a) $f(-1)=0$
(b) $f(2)=9$
(c) $f(2)-f(-1)=9$
Work Step by Step
If $f(x)=x^{3}+1$, then
(a) the value of $f$ at $x=-1$ is ___$f(-1)=(-1)^{3}+1=-1+1=0$___
(b) the value of $f$ at $x=2$ is ___$f(2)=2^{3}+1=9$___
(c) the net change in the value of $f$ between $x=-1$ and $x=2$ is ___$f(2)-f(-1)=9-0=9$___
