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Given

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Answer:
The sum of any integer and its opposite is equal to zero. Summary: Adding two positive integers always yields a positive sum; adding two negative integers always yields a negative sum. To find the sum of a positive and a negative integer, take the absolute value of each integer and then subtract these values.
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a) 2.7 sec
b) 2.6 sec
c) 30.3 ft, 1.3 sec
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graphed the equation and determined answers from the curve
Answer:
9
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