Answer
$a.\quad 2$
$b.\quad 1$
$c.\quad -1$ and $1$
Work Step by Step
$a.$
the number in the column $h(x)$ that corresponds to $x=-2$ is $2$
$h(-2)=2$
$b.$
the number in the column $h(x)$ that corresponds to $x=1$ is $1$
$h(1)=1$
$c.$
The number in the column $x$ that corresponds to $h(x)=1$...
...there is $x=-1$, ... and there is also $x=1$, so
$h(-1)=1$
$h(1)=1$