SOLUTION: Claire has received scores of 85,88,87,and 75 on her algebra tests. What is the minimum score she must receive on the fifth test to have an overall test score average of at least

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Question 398048: Claire has received scores of 85,88,87,and 75 on her algebra tests. What is the minimum score she must receive on the fifth test to have an overall test score average of at least 83?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
We have the inequality

%2885+%2B+88+%2B+87+%2B+75+%2B+x%29%2F5+%3E=+83 where x is the fifth test score.

85+%2B+88+%2B+87+%2B+75+%2B+x+%3E=+415 (multiplying both sides by 5)

335+%2B+x+%3E=+415

x+%3E=+80