Question

What does f(3) equal?

Answer 1

for n=2, f(2)=f(1)*(-1/2) we know that f(1)= -16 so put it

f(2)=(-16)*(-1/2)=8

then put n=3 so f(3)=f(2)*(-1/2)

f(3)=8*(-1/2)= -4

Explanation: