To find the inverse of a function, switch the x and the y and then solve for the new y. Like this: [tex]x= \frac{1}{3}y+5[/tex]. Subtract 5 from both sides to get [tex]x-5= \frac{1}{3}y [/tex] and then multiply both sides by 3. 3(x - 5) = y. B is your choice.
