A plant manager counted 4,800 car parts that were produced on an eight-hour shift. What is the unit rate in parts per hour? (1 point)

To find the unit rate in parts per hour, we need to divide the total number of parts (4,800) by the number of hours (8).

Unit rate = Total parts / Number of hours = 4800/8 = <<4800/8=600>>600 parts per hour. Answer: \boxed{600}.