Answer: c
Step-by-step explanation: just took the test
Answer:
180 = 15x+30y
Step-by-step explanation:
X= children tickets
Y= adult tickets
In order to have average 80 score from 5 tests, student needs to have 400 points (80%*500=0.8*500=400)
So far he has 63+72+88+91= 314
400-314=86
He needs to get 86 points from the last test.
Since he is obviously getting better at tests, i think he'll manage :)
i think its f it just seems to be the most reasonable awnser a and i dont know this stuff :P
Step-by-step explanation: