Sam's father sketched out the area that will be the family's backyard which is 55 ft by 80 ft. Sam asks how she can help so her dad tells her that she can make a plan to landscape the backyard. She decides she will start by planting grass in the open areas surrounding the basketball court which measures 20 ft by 8 ft and the shed which measures 11 feet by 11 feet. If each bag of grass seed covers up to 1500 square feet for a new lawn, how many bags of grass seed does she need?
