Answer:
y = 36
Step-by-step explanation:
so there directly proportional..so lets make a proportion
if y = 9 when x = 5, what is the value of y when x = 20...
5 20
------ = ----- (cross multiply)
9 y
(5)(y) = (20)(9)
5y = 180
y = 180/5
y = 36 <=== so when x = 20, y = 36
