This homework problem is broken into 4 parts. I was wondering what part 3 and 4 where.

1. (20 pt) For the following graph of function f(x), evaluate the following limits or determine they don't exist (assume that each line on the graph paper is 1 unit) (a) (5 pt) lim+ +-3f(x) (b) (5 pt) limx-+of (x) (c) (5 pt) limz-+3 f(x) (d) (5 pt) limx-40o f(x)