Verified Answer :

f(x + 1) = (5/2)f(x)

f(x + 1) = 2.5
f(x),           f(1) = 3.2

f(2) = 2.5f(1) = 2.53.2 = 8

f(3) = 2.5f(2) = 2.5
8 = 20

f(4) = 2.5f(3) = 2.520 = 50

f(5) = 2.5f(4) = 2.5
50 = 125

Answer:

The answer is 125 on E2020 guys. Just got it right.

Step-by-step explanation: