Danielle’s test scores are 74, 84, 86, and 88. The final exam will count as StartFraction 2 Over 3 EndFractionof the final grade. What score does Danielle need on the final in order to earn a B, which requires an average score of 80? What score does she need to earn an A, which requires an average of 90?

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Danielle’s test scores are 74, 84, 86, and 88. The final exam will count as StartFraction 2 Over 3 EndFractionof the final grade. What score does Danielle need on the final in order to earn a B, which requires an average score of 80? What score does she need to earn an A, which requires an average of 90?

Mathematics
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first find the average of 74,84,86, and 88, then multiply that by (1/3) then solve (average of first 4 scores)(1/3) + (final score)(2/3) = 80 to get the final score. then do the same thing with 90 instead of 80, if she wants an A
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