Question

Given the function f(x) = The quantity of 3x minus 4, divided by 5, which of the below expressions is correct?
f−1(x) = The quantity of 5x plus 4, divided by 3.
f−1(x) = The quantity of 5x minus 4, divided by 3.
f−1(x) = The quantity of negative 3x minus 4, divided by 5.
f−1(x) = The quantity of 4 minus 3x, divided by 5.

Answer 1

solve for x
y=(3x-4)/5
5y=3x-4
5y+4=3x
(5y+4)/3=x
switch the x" and y''
(5x+4)/3=y
f(x)=(5x+4)/3

Answer 2

f'(x)=(5x+4)/3