A. F(n) = 3n + 5 is your answer
Plug in the corresponding number to n to get F(n).
When n = 0:
3(0) + 5 = F(n)0 + 5 = F(n)F(n) = 5 (True).
When n = 1:3(1) + 5 = F(n)3 + 5 = F(n)F(n) = 8 (True).
When n = 2: 3(2) + 5 = F(n)6 + 5 = F(n)F(n) = 11 (True)
etc. etc.
hope this helps