D) f(x)=(1/2)^x, g(x)=(1/8)^x, h(x)=(2/3)^x.
If the base of the exponent in a general function p(x) is lower, this means that large negative values of x will result in large positive values of p(x). Example: (1/5)^(-10)= almost 10 million, while (1/2)^(-10)= only 1024.
