Is this a triangle :/

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

Fast! find the length of cu. the triangles are similar. show your work.

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.