The answer would be 0.10714 or 3/28 if you wanted to simplify it.
Answer:

<em>Hope this helps!!!</em>

Hi there!
f(x) = x + 5
1. y = x + 5
Switch places from x and y.
2. x = y + 5
Subtract 5.
3. x - 5 = y
Switch sides.
4. y = x – 5
Now we've found our answer.
~ Hope this helps you!