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SAT
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6n, 6, 6n+6

For the three quantities in the list above, what is the average (arithmetic mean)?

Feb 6th, 2015

6n + 6 + 6n + 6 

12 n + 12

divide by 3

12/3 n + 12/3

4n + 4

Feb 6th, 2015

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Feb 6th, 2015
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Feb 6th, 2015
Dec 10th, 2016
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