Use the given function:
f(x) = { 3x + 12 if −2 ≤ x < 2
{ x − 23 if 2 ≤ x ≤ 4
Find the value of f(x) at x = -2 and 3.
a. -1/2 and 2/3
b. -5/2 and 4/5
c. -11/2 and 7/3
d. -7/2 and 1/3