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.)

math - PsyDAG, Thursday, April 21, 2011 at 11:09am
(90 + 89 + 85 + n)/4 ≥ 90

Solve for n.
math - manny, Monday, February 4, 2013 at 7:55pm
10-20

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