Mathematics, 07.10.2019 19:00 princesskoi8561

Kelly's dad compares her running time in a marathon to her times for last year's race. he records whether she has increased or decreased her time for the first three stages of the race. what is the total increase or decrease in kelly's time? did she improve her time? explain.

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Kelly's dad compares her running time in a marathon to her times for last year's race. he records wh...

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