Exponential function by definition is of the form:
[tex]f(x)=ab^x[/tex]
Therefore the options that are not exponential are:
[tex]f(x)=-9x^{11},k(x)=-3x^7[/tex]
So f(x) and k(x) are not exponential.
The options that are exponential are:
[tex]g(x)=9(5.44)^x,h(x)=6(\frac{1}{7})^x,j(x)=2(5)^x[/tex]
So the functions g(x),h(x) and j(x) are exponential.
