When simplified, which of the following expressions has a coefficient of -3? -5 m + 2 m
2 m + 5 m
-2 m + 5 m
5 m - 2 m

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

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Sara can take no more than 22 pounds of luggage on a trip.her suitcase weighs 112 ounces.how many more pounds can she pack without going over the limit?