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

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

Unit rate = Total car parts / Number of hours
Unit rate = 4,800 car parts / 8 hours

Now, we can calculate the unit rate:
Unit rate = 600 parts per hour

Therefore, the unit rate is 600 parts per hour.