Math
posted by Jamie
Theater has 108 seats, which are arranged in rows. The number of seats in each row is 3 less than the number of rows. How many rows of seats are in the theater.

Reiny
let the number of rows be n
then the number of seats in each row is n3
n(n3) = 108
n^2  3n  108=0
(n12)(n+ 9) = 
n = 12 or n = 9 , but we can't have a negative number of rows
there are 12 rows
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