For the function $f$ whose graph is given, state the value of the given quantity below. If the quantity does not exist then enter DNE.

(a) $\displaystyle \lim_{x \to 0} f(x)$ help (limits)
(b) $\displaystyle \lim_{x \to 3^-} f(x)$
(c) $\displaystyle \lim_{x \to 3^+} f(x)$
(d) $\displaystyle \lim_{x \to 3} f(x)$
(e) $f(3)$