John has received scores of 85, 88, 87, and 95 on her algebra tests. what is the minimum score he must receive on the fifth test
to have an overall test score average of at least 90?
1 answer:
The solution is;
(85 + 88 + 87 + 95 + x) divided by 5 > = 90
355 + x > = 450
x > = 95
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