Homework Help: math

Posted by Ellie on Sunday, October 25, 2009 at 3:46pm.

Determine the seating capacity of an auditorium with 10 rows of seats if there are 10 seats in the first row, 16 seats in the second row, 22 seats in the third row, 28 seats in the forth row, and so on

???

math - bobpursley, Sunday, October 25, 2009 at 4:03pm
looks like an arithemetic progression, is 10, then each row increases by 6

Isn't there a neat formula for that?

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