Answer:
D
Step-by-step explanation:
So you start with $2.65 and a variable y. What we will do is work without the dollar and keep it for the end as it quite disturbs and work our way while keeping the y. So first we have 2.65. Now it rose by y so. The price = 2.65 + y. Then it dropped by 0.15. So 2.65 + y - 0.15. Here you see we have like terms so we reduce and get 2.50 + y. Now it rose by 0.05. So 2.50 + y + 0.05. Again, like terms, reduce. 2.55 + y. There you go with the answer.
Answer:
Step-by-step explanation:
Given
comparing it with standard equation 
so 4a=1
so Focus of parabola is (0,0)
directrix
y=-a
here 
It is -72 lol. that's pretty basic you know
Your answer is- (x being tickets sold and y being the amount of money) y=55x.
This means that for every ticket bought, it costs 55 dollars.
