Question

Jaheem has a goal running a total of 125 miles this month. Each day that he ran, he ran 7 miles. Which expression could Jaheem use to determine how many miles he has left to run after running for d days?

x a.
125 – 7d


x b.
7d + 125


x c. fraction numerator 125 over denominator 7 d end fraction

x d.
7d

Answer 1

a. 125 – 7d

Explanation:

Let d be the number of days.

Given the following data;

Total distance (month) = 125 miles

Distance covered per day = 7 miles

To determine how many miles he has left to run after running for "d" days, this mathematical expression can be used;

Total distance - distance covered per day = number of miles remaining

`125 - 7d`