Step-by-step explanation:
Answer:
step below
x + 4y = 30
x – 2y=0
x= 2y
2y + 4y = 30
6y = 30
y = 5
x = 10
1.28 is the amount you get off
The y-intercept is 8.
8 hours. maybe 8×4
I'm not sure on the last part though