Mathematics, 15.12.2020 01:00 kbuhvu

Lashonda has scored 83, 72, 74, and 85 on her previous four tests. What score does she need on her next test so that her average (mean) is 81?

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Lashonda has scored 83, 72, 74, and 85 on her previous four tests. What score does she need on her n...