clancy has 5 1/3 yards of wood to construct shelves. He will use a 2/3 yard peice of wood for each shelf. How many shelves can he make

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.