You and a partner tend 3 machines that run continuously. one prints 200 plastic bottles per hour, one prints 180 plastic bottles per hour, and one prints 150 plastic bottles per hour. if the machines work at their average rates, how many plastic bottles will they print during the 8.5 hours you are at the factory for your shift? a.) 530 b.) 538.5 c.) 1,700 d.) 4,240 e.) 4,505