Answer:
choice A is correct
Step-by-step explanation:
You can have a look at the following rough work
A
Steps to find the inverse function:
1) replace f(x) with "y"
2) solve for x:
3) replace "x" with , and y with x:
angle ABC is 160°.........
jose's cards: x
philippe's cards: y
5x=y
5x-50=y-5