Question

f(x) = 5x+3, then what is f^–1(x) ?

Answer 1

your function says
1) multiply by 5
2) add 3

inverse will say
1) subtract 3
2) divide by 5

Answer 2

you can write it as
\[f^{-1}(x)=\frac{x-3}{5}\]

Answer 3

fist replace f(x) with y.
y=5x+3
now replace each y with x and each x with y
x=5y+3
now solve for y

Answer 4

x-3/5=y?

Answer 5

yes now replace y with f^-1(x)

Answer 6

does doing that change my answer or its just to write it right?

Answer 7

its just to write it like that
your answer remains same
f^-(x)=(x-3)/5