It might be C. I used the process of elimination, so I'm not so certain
Answer:
50
Step-by-step explanation:
6/100=3/y
Let y be the total number of items on the test
[cross multiply]
6×y =3×100
6y = 300
divide both sides by 6
y = 50
Answer: A, (y-1)^2/49-x^2/81=1
Y=1 because no matter the x value y will be 1
