Answer:
7
Step-by-step explanation:
First, plug-in f(-3) into t in the function:

Second, multiply -2 and -3 to get 6:
⇒
Third, add 6 and 1 to get your answer:
⇒
That looks hard... I can see the attachment tho<span />
The solutions are where these two functions intersect, that is, at x = -4 and x = -6. The answer is C.