Jill has been watching the squirrels that live in her neighborhood. The number of squirrels changes each week.

n         f(n)

1            8
2             12
3              18
4              27


Which function best shows the relationship between n and f(n)?

A f(n) = 12(1.5)n
B f(n) = 12(1.5)n−1
C f(n) = 8(1.5)n
D f(n) = 8(1.5)n−1