Answer:
If Melinda runs 1 mile in less than or equal to 7.5 minutes, after 45 minutes she would have done 6 miles.
Explanation:
Consider the provided information.
Melinda is running in gym class she has 45 minutes and needs to run 6 miles.
Let x is the amount of time she can spend running each mile
She has 45 minutes, that means she need to run 6 miles within 45 minutes.
She can complete the running before 45 minutes but not after it.
So we will use the sign of inequality ≤.


Thus if Melinda runs 1 mile in less than or equal to 7.5 minutes, after 45 minutes she would have done 6 miles.