Answer:
80
Step-by-step explanation:
30 = 100
24 = 80
6 x 5 = 30
6 x 4 = 24
5 = 20 because 5 x 8 = 80.
-y=5-x
I believe the answer would be h. For every value (x,y) of the function f, h has the inverse (y,x).
