Final answer:
The unit rate for Mason's run is calculated by dividing the total distance ran by the total time taken. If Mason ran 15 miles in 3 hours, his unit rate would be 5 miles per hour.
Step-by-step explanation:
To determine the unit rate for Mason's run, we need to know the total distance ran by Mason and the time it took to complete the run. The unit rate is typically expressed as the distance per unit of time, such as miles per hour or kilometers per hour. For example, if Mason ran 15 miles in 3 hours, you would divide the total distance by the total time to find the unit rate:
Total distance = 15 miles
Total time = 3 hours
Unit rate = Total distance ÷ Total time = 15 miles ÷ 3 hours = 5 miles per hour
This means that Mason's unit rate is 5 miles per hour.