Mathematics, 09.02.2021 05:40, Sariyahhall1

Alonzo has scored 79, 77, 69, and 85 on his previous four tests. What score does he need on his next test so that his average (mean) is 78?

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Alonzo has scored 79, 77, 69, and 85 on his previous four tests. What score does he need on his next...