Question

Given f(x) = the quantity of x minus 5, divided by 3, solve for f-1(3).
-1
14
18
21

Answer 1

f(x)=(x-5)/3

Answer 2

First of all, U've to get \[f^{-1}(x)\]

To get it from \[f(x)\] you have to get all of the x's in the original function in one hand and the rest of the original function on the other hand (y)

For your case :

\[f^{-1}(x) = 3x + 5\]

Then you will subs. by desired value to get the answer which will be 14

Let me know if you got it :)

Answer 3

Yes