Question

Which graph represents the exponential function below?

Answer 1

see below

Explanation:

The -1 added to the exponential term tells you the horizontal asymptote is -1. Graphs A and C match that description.

Setting x=0 gives the value ...

f(0) = 5×3^0 -1 = 5×1 -1 = 4

Only graph C has a y-intercept of 4 and a horizontal asymptote of -1.