The George River herd of caribou in Canada was estimated to be about 4700 in 1954 and grew at an exponential rate to about 472,000 in 1984. If the herd had continued to grow at the same rate, what would its population be in 2020?

Describe the end behavior of the function below. f(x)=(2/3)^x-2 a. as x increases, f(x) approaches infinity. b. as x decreases, f(x) approaches 2. c. as x increases, f(x) approaches -2. d. as x decreases, f(x) approaches negative infinity.