Answer
(a) and (b) See below
(c) $g(-5)=-9$
(d) $g(2)=-2$
Work Step by Step
The x-intercepts are all points of a graph when f(x)=0 while the y-intercepts are all points of a graph when x=0.
$g(-5)=2(-5)+1$
$g(-5)=-10+1$
$g(-5)=-9$
$g(2)=2-4$
$g(2)=-2$