
Mark M. answered 10/04/15
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Mathematics Teacher - NCLB Highly Qualified
x represents the length of the room
y represents the width of the room
xy represents the area of the room
$4.50xy represents the cost of the flooring
2(x + y) represents the perimeter of the room
$12(2)(x + y) represents the cost of the baseboards
4.50xy + 24x + 24y = 1224
Two equations are needed to solve a system of two variables.
Is some relationship between the length and width of the room provided?