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OpenStudy (anonymous):
Rachel's average score after 6 tests is 83. If rachel earns a score of 97 on the 7th test, what is her new average?
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OpenStudy (anonymous):
\[83=\frac{ x }{ 6 }....>x=83\times6\] \[The..new,,average=\frac{ 97+83\times6 }{ 7 }=85\]
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