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."
This is because exponential functions (like \( f(x)=1.3^x \)) grow much faster than linear functions (like \( g(x)=1.3x \)) as x increases. Initially, \( g(x)=1.3x \) may be greater for small values of \( x \), but eventually, the exponential function will outpace the linear function.