SOLUTION: Heather recieved grades of 80, 75, and 86 on three algebra tests. What must her grades be on the next test if her average for the four tests is to be at least 82..
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-> SOLUTION: Heather recieved grades of 80, 75, and 86 on three algebra tests. What must her grades be on the next test if her average for the four tests is to be at least 82..
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Question 96548: Heather recieved grades of 80, 75, and 86 on three algebra tests. What must her grades be on the next test if her average for the four tests is to be at least 82..
I need help setting this up.. thanks Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Heather recieved grades of 80, 75, and 86 on three algebra tests. What must her grades be on the next test if her average for the four tests is to be at least 82..
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EQUATION:
Let the grade on the fourth test be "x".
(80+75+86+x)/4 >= 82
241+x >= 4*82
241+x >= 328
x >= 87
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Cheers,
Stan H.
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