college algebra

posted by Katlyn

A rectangular auditorium seats 1920 people. The number of seats in each row exceeds the number of rows by 8. Find the number of seats in each row.

  1. Reiny

    number of rows --- x
    number of seats per row --- x+8

    x(x+8) = 1920
    x^2 + 8x - 1920 = 0
    (x-40)(x+48)=0
    x = 40 or x = -48, which of course makes no sense

    there are 40 rows, and each row has 48 seats

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