Which of the following is not an exponential function?
A. g(x)=5(2.7) ^ -x
B. f(x)=7^x
C. f(x)=6x(3/4)^4
D. g(n)=125e^0.12n
E. none of these
they all have a power sign so they are all exponential functions, so E I guess. But e is useful for exponential equations.
"C" is NOT exponential. f(x)=6x(3/4)^4=f(x)=1.8984375x
+128 
