I need help answering b and c, thank you

7. Refer to the following graph of f(x). a. At what value(s) of x is f(x) discontinuous? b. Determine whether the limit of f(x) exists (both one-sided and the limit) at each value given in part a. c. Classify any points of discontinuity as either removable or nonremovable. 0.5 -1.5