please answer all questions. the 3rd picture the 2nd picture arepart of the same question Use the graph to determine the limit. (If an answer does not exist, enter DNE.) (a) \( \lim _{x ightarrow c^{+}} f(x)= \) (b) \( \lim _{x ightarrow c^{-}} f(x)= \) (c) \( \lim _{x ightarrow c} f 1 answer