Find the percent of discount to the nearest percent if a TV’s regular price is $625 and the sale price is $562.50.

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?