Mathematics, 21.12.2020 21:00 QANDA660

Cindy has test scores of 72,80,85,82,77. What does Cindy need to score on her last test for her average grade to be between a 80 and 82?

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Cindy has test scores of 72,80,85,82,77. What does Cindy need to score on her last test for her aver...