Gavin does yard work around the neighborhood. He has 3.5 pounds of grass seed in his shed and buys an additional 5.25 pounds of grass seed from the store. If he uses 1.25 pounds of grass seed for 1,000 square feet, how many 1,000-square-foot sections can he plant with grass seed? A.

6

B.

7.5

C.

10

D.

7
please help. thank you