Answer:
m=217 miles/31 days
Explanation:
Carl has to run 217 miles in 31 days; to find the number of miles he needs to run per day, he should divide the number of miles he has to run (217 miles ) by the number to days he will run ( 31 days):
Carl has to run 7 miles per day. We can confirm this result by multiplying this by 31 days, and we should get 217 miles: