Answer:
1,3
Step-by-step explanation: i belive so
1/4 (6 + s)
One-fourth (1/4) of the sum (+) of: 6 and s (6 + s)
We actually don't need to do any computation. By definition, the inverse function
changes the role of input and output. So, if a function f maps x onto y, the inverse function maps y onto x.
You have to think like this: if the function makes a step further, the inverse function makes that same step back.
This means that the composition
is always the identity function
. In fact,

So, for every function, you have

#1 is 65 by 75, next is 3 by 9, and the last is 75 by 25