Answer:
In exponentials, the base is any positive constant not = 1, and the power is the variable x (any real number), or a function of x. So as x increases, a^x is raised to higher and higher powers of a. To compare, say, 2^x and x^2; in x^2, as x increases to x+1, y increases to x^2+2x+1.
hope it helps :)
