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OpenStudy (anonymous):
Shelly's scores on her first two tests in Algebra were 72 and 89. What will she need to make on the third test to have an average of at least 80? plz help me
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OpenStudy (anonymous):
You have to take 80 * 3 = 240 Then you take total of 240 subtract by the first two test which is 72+89 = 161 240 - 161 is equals to you answer
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