Which of the following options results in a graph that shows exponential growth?
a. f(x) = 0.4(3)x
b. f(x) = 3(0.5)x
c. f(x) = 0.8(0.9)x
d. f(x) = 0.9(5)−x

A function shows

Consider all options:

A. The function shows exponential growth, because

B. The function shows exponential decay, because

C. The function shows exponential decay, because

D. The function shows exponential decay, because

correct choice is A

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.