Answer:
The yellow box.
Step-by-step explanation:
According to the graph, 10 students get off the bus every 2 minutes. Do 10 divided by 2 to find out how many students get off the bus each minute. Since the answer is 5, that means 5 students get off the bus each minute.
5x-8y=1...(1)
3x+6y=-21...(2)
(1)*3:
15x-24y=3...(3)
(2)*5:
15x+30y=-105...(2)
(3)-(2):
15x-24y-(15x+30y)=3-(-105)
15x-24y-15x-30y=108
-54y=108
y=-2
Do what the problum ids telling you than apply it to the math and you will always get the right answer
