Having a lot of trouble understanding how to find these answers. Please help!

3. For the function f whose graph is given, Find the limit or value, or explain why it does not exist. a) limx-2+ f (x) b) limx-2- f(x) c) limx-+2 f (x) d) limx--3+ f (x) e) limx--3 f(x) 1 f) limx-4 f(x) g) f (4) h) limx-of (x)