Question

Which of the exponential growth functions has a multiplicative rate of change of 4?
x
|
-1
0
1
2
O
f(x)
121
2
4
x
-1
0
1
2
O
f(x)
1
8
1
∞
64
x
-1
0
41
2
O
f(x)
1
4
1
4
16