The graph shown is for the function $f(x)$.
Compute the following quantities:
a) $f(-7)=$
b) $\lim_{x\to {-4}^+}f(x)=$
c) $\lim_{x\to {-2}^-}f(x)=$
d) $\lim_{x\to {6}}f(x)=$

You can earn partial credit on this problem.