A rectangle has length 2x+3 and width 7x+9. Write a polynomial in standard form that represents the perimeter of the rectangle.

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The perimeter consists of the sum of two lengths and two widths:

2(2x+3)+2(7x+9)=4x+6+14x+18=18x+24.

So 18x+24 is the perimeter.

by Top Rated User (1.1m points)

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