The width of a rectangle is 9 inches more than 4 times the length. If x represents the length, write an algebraic expression in terms of x that represents the perimeter of the rectangle. Simplify the expression.

x = length

4x + 9 = width

Perimeter of a rectangle is 2(length) + 2(width)

2(x) + 2(4x + 9) = perimeter {substituted given information into perimeter formula}

2x + 8x + 18 = perimeter {used distributive property}

**10x + 18 = perimeter**{combined like terms}

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