SOLUTION: on three consecutive passes, a footbal team gains 5 yards, loses 17 yards, and gains 21 yards. what number represents the total net yardage

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Question 610683: on three consecutive passes, a footbal team gains 5 yards, loses 17 yards, and gains 21 yards. what number represents the total net yardage
Answer by ashipm01(26) About Me  (Show Source):
You can put this solution on YOUR website!
Each play that the team gains yards can be modeled as a positive value and each play that the team loses yards can be modeled as a negative value. So this problem is simply asking for the summation of the three numbers: 5, -17, and 21.
So the answer is then:
+5+-+17+%2B+21+
Which evaluates to the net yardage of 9.