The correct response is:
Ramona needs to add another column to the table and find the growth factors between the consecutive values of f(x). She will be able to prove that exponential functions grow by equal factors over equal intervals.
This is because exponential functions have a constant growth factor, meaning that each time the input x increases by a constant amount, the output f(x) increases by a multiplicative (not additive) factor. By calculating the growth factors between consecutive values, Ramona will be able to demonstrate this characteristic of exponential growth.