Question

Which of the following functions shown in the table below could be an exponential function?

Check all that apply.

x -3 -2 -1 0 1 2 3
f(x) 0.67 1.11 1.82 3 5.95 9.15 14.45
g(x) 0.125 0.25 0.5 1 2 4 8
h(x) 0.25 0.5 0.75 1 1.25 1.5 1.75
k(x) 64 16 4 1 0.25 0.0625 0.0156


A. g(x)
B. h(x)
C. k(x)
D. f(x)