Respuesta :

amna04352

Answer:

f(4) = -189

Step-by-step explanation:

f(1) = 7

f(n) = -3f(n-1)

f(2) = -3f(1) = -3 × 7 = -21

f(3) = -3f(2) = -3 × -21 = 63

f(4) = -3f(3) = -3 × 63 = -189