A landscape company wants to plant lawn seed. A . bag of lawn seed will cover up to . . of grass and costs $. plus the % sales tax. A scale drawing of a rectangular yard is given. The length of the longest side is , and the shorter side is 90 ft. The house, driveway, sidewalk, garden areas, and utility pad are shaded. The unshaded area has been prepared for planting grass. Calculate the area that is to be covered by grass and determine how many . bags of lawn seed should be ordered, and what is the cost? Remember that you cannot buy a portion of a bag.