Answer
(a) $6$
(b) $6$
(c) $6$
Work Step by Step
(a) Graph the functions as shown, as $x\to -2^-, f(x)\to 6$, $$\lim_{x\to-2^-}f(x)=6$$
(b) As $x\to -2^+, f(x)\to 6$, $$\lim_{x\to-2^+}f(x)=6$$
(c) $$\lim_{x\to-2}f(x)=\lim_{x\to-2^-}f(x)= \lim_{x\to-2^+}f(x)=6$$
