70% of the tickets sold at a school carnival were early-admission tickets. If the school sold 80 tickets in all, how many early-admission tickets did it sell?

The school sold 56 early admission tickets.

Step-by-step explanation:

To figure this out, you can multiply 80 by 0.7 and get the amount of early admission tickets that way.

If you wanted too, you could also do it by figuring out what 10% of 80 is (which is 8) and multiply that by 7 if that's easier for you.

step-by-step explanation:

x^2 -12x + 36 + y^2 = 36

x^2 + y^2 = 12x

r^2 = 12rcos(theta)

r = 12 cos(theta)