## Functions Modeling Change: A Preparation for Calculus, 5th Edition

$$y=\frac{\ln \left(x\right)-1}{3}$$
Switching the elements of the domain and the range (in other words, the dependent and independent variables), we find that the inverse is: $$x=e^{3y+1} \\ y=\frac{\ln \left(x\right)-1}{3}$$