how to do Q7 and 8. thank you.

7. (8 points) The graph of a function f is given as below, with points of discontinuity at only z = -2 and r = 2. Determine the following limits. (4 points) (a) lim,-+2+ If(z)12 - 3f(2) +2 If (2)]2 - 4 (4 points)(b) limz-+2 f-1(x), where f-(x) is the inverse function of f when f is restricted to the domain -6