A lawn company advertises that they can spread 7,500 square feet of grass seed in 2 1/2 hours. Find the number of square feet of grass seed that can be spread per hour.

An airplane is flying at an elevation of 5150 ft, directly above a straight highway. two motorists are driving cars on the highway on opposite sides of the plane, and the angle of depression to one car is 35 ̊ and to the other is 52 ̊. how far apart are the cars?