how do you compute limit and what is the answers for a, b and c?

Calculus I Problem 7 e a Consider the family of functions f(x) = " where c is an arbitrary positive constant. (a) Compute lim,-+c+ f(x) and limx-c- f(x). (These limits may be infinite.) (b) Compute limr-+ f(x) and limx-+-co f(x). (These limits may be infinite.) (c) For what values of x is f increasing? For what values of x is f decreasing