SOLUTION: An arithmetic student needs an average of 70 or more to receive credit for the course. She scored 82, 80, and 87 on the first three exams. Write an inequality representing the scor
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Question 188669: An arithmetic student needs an average of 70 or more to receive credit for the course. She scored 82, 80, and 87 on the first three exams. Write an inequality representing the score she must get on the last test to receive credit for the course. Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! Let t = score on last exam
then
(t + 82 + 80 + 87)/4 >= 70
t + 82 + 80 + 87 >= 280
t + 249 >= 280
t >= 280 - 249
t >= 31
