A parabola opening up or down has vertex (0,0) and passes through (12, -18). Write its equation in vertex form.

Landon wallin is an auto mechanic who wishes to start his own business. he will need $4400 to purchase tools and equipment. landon decides to finance the purchase with a 48-month fixed installment loan with an apr of 5.5%. a) determine landon's finance charge. b) determine landon's monthly payment.

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .