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September 2, 2014

Homework Help: math

Posted by lucy on Wednesday, April 20, 2011 at 9:22pm.

An average score of 90 or above in a history class receives an A grade. You have scores of 90, 89, and 85 on three exams. Find the range of scores on the fourth exam that will give you an A grade for the course. (Let N stand for your score on the fourth exam.)

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