Abag of fertilizer covers 2500 sq ft of lawn. find how many bags of fertilizer should be purchased to cover a rectangular lawn 280 by 180 feet

The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet