College Algebra

Use a system of equations to solve the problem.

A rectangular picture frame has a perimeter of 2,200 centimeters and a width that is 300 centimeters less than its length. Find the area of the picture.
_____ cm2

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  1. 2 L + 2 W = 2200
    so
    L + W = 1100

    W = L - 300

    L + (L-300) = 1100

    2L - 300 = 1100

    2 L = 1400

    L = 700
    then
    W = 400
    and
    A = L * W = 280,000 cm^2

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  2. thank you, big help

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