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Mathematics, 12.01.2020 10:31 jeffcarpenter

Bethany is training for a marathon. her average mile time is 730 but this varies by at most 31 seconds, give or take. write an equation that would her find her fastest and slowest time.

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Bethany is training for a marathon. her average mile time is 730 but this varies by at most 31 secon...
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