Which unit rate is the lowest price per ounce? choice a: 6 ounces of raisins for $2.98 choice b: 13 ounces of raisins for $7.18 choice a choice b the unit rates are equal. the unit rates cannot be determined.

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.