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May 3, 2015

Homework Help: trigonometry

Posted by Cindy on Tuesday, June 16, 2009 at 9:54pm.

Find the number of cans stacked in a display if there are 30 rows of cans with six on the top row, ten on the second row, 14 on the third row and so on.

I know it's the sum of an arithmetic sequence, but I'm not sure exactly what to do.

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