Company A would because it is the least with the lowest slope since it is not increasing very fast
to get the inverse of any expression, we start off by doing a quick switcheroo on the variables and then solve for "y".
1/3(9x) =3x
1/3(18) =6
3x+6-5
Then you do
-(x)=-x
-(3)=-3
5x-x-3 = 4x-3
4x-3=3x+6-5
4x-3=3x+1
x=4