Respuesta :

Answer:

f(5) = 15

Step-by-step explanation:

f(2) = f(2-1) + 3

= f(1) + 3

= 3 + 3

= 6

f(3) = f(3-1) +3

= 6 + 3

= 9

f(4) = f (4-1) + 3

= 9 + 3

= 12

f(5) = f(5-1) + 3

= 12 + 3

= 15