To explore the growth characteristics of an exponential function using the given table, Ramona needs to find the growth factors between the consecutive values of \( f(x) \). This involves adding another column to the table that calculates the ratio of consecutive \( f(x) \) values, which will help her illustrate that the growth of the function occurs by equal factors over equal intervals.
Therefore, 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.