The values of two functions, fand g, are given in a table. One, both, or neither of them may be exponential. Give the exponential models for those that are. (If an answer does not exist, enter DNE.)
-2
х
-1
0
2
1
f(x)
0.18
0.9
4.5
22.5
112.5
g(x)
12
6
3
1.5
0.75
f(x) =
g(x) =