Teresa is given the equatio, 10x + 5 = 80; where x represents the cost of one mini pizza. find x.

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?