Answer:
f-1 (the -1 is the power of f') (x)=3x-6
Explanation:
f (x) = 1/3x+2 use substitution
y = 1/3x +2 Interchange the variables
x = 1/3y +2 swap the sides
1/3y +2 = x multiply both sides
y + 6 =3x Move the constant to the right
y = 3x - 6 Use substitution