Gilberto needs to purchase baseballs and bats for his youth baseball league. he'll need at least 15 pieces of equipment, but he only has $435 to spend. baseballs cost $20 each and bats cost $35 each. which is a combination of baseballs and bats that gilberto can afford to buy? a.) 9 baseballs and 7 bats b.) 10 baseballs and 7 bats c.) 8 baseballs and 6 bats d.) 8 baseballs and 10 bats