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OpenStudy (anonymous):
i have grades of 8465,and 76 on three math tests what grade must i get on the next test to have an average of excatly 80 for the four test
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OpenStudy (precal):
\[\frac{ 84+65+76+x }{ 4 }=80\]
OpenStudy (precal):
solve for x and you will have your answer
OpenStudy (anonymous):
x =95 so, you need at least an A+
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