The inequality that best describes his morning commute is:
10 + x + y ≥ 210
We know that his commute each morning is:
So the total commute, in minutes, is:
10 + x + y
We know that he spends, at least, 3.5 hours in total, so we can write:
10 + x + y ≥ 3.5*(60) = 210
Where on the left side we wrote the 3.5 hours in minutes, by multiplying it by 60.
Then the inequality is:
10 + x + y ≥ 210
If you want to learn more about inequalities:
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