To correctly analyze the growth rates of the functions \( g(x) = 1.3x \) (linear growth) and \( f(x) = 1.3^x \) (exponential growth), Austin should compare their growth behaviors.
The correct statement is:
Austin should compare the steepness of the curves. The growth rate of \( f(x) = 1.3^x \) will quickly surpass the growth rate of \( g(x) = 1.3x \).
Exponential functions grow significantly faster than linear functions as \( x \) increases. Thus, after a certain point, the graph of \( f(x) = 1.3^x \) will rise steeply above that of \( g(x) = 1.3x \).