Mathematics, 22.09.2021 04:00, collinpeterson21

Katrina must take five exams in a math class. If her scores on the first four exams are 71, 69, 85, and 83, what score does she need on the fifth exam for her overall mean to be at least 78?

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Katrina must take five exams in a math class. If her scores on the first four exams are 71, 69, 85,...