kirans mother gets a restaurant bill for $25. He has a coupon for 15% of the as the discount is applied she adds 20% as tip. What is the total after the discount and tip explain how or show resoning​

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.