Mathematics, 07.10.2019 11:00 izzzzz49

David’s scores on the first three of four 100-point math tests were 86, 92, and 89. what score does he need on his fourth math test to ensure an average score of at least 90?

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David’s scores on the first three of four 100-point math tests were 86, 92, and 89. what score does...