Answer
(a) $2$
(b) $-3$
(c) $2$
(d) $-2$
Work Step by Step
(a) Use the given graph, we have $f(0)=0, g(0)=2$, thus $(f+g)(0)=0+2=2$
(b) Use the given graph, we have $f(-1)=-2, g(-1)=1$, thus$(f-g)(-1)=-2-1=-3$
(c) Use the given graph, we have $f(1)=2, g(1)=1$, thus$(fg)(1)=2(1)=2$
(d) Use the given graph, we have $f(2)=4, g(2)=-2$, thus$(\frac{f}{g})(2)=\frac{4}{-2}=-2$
