The length of a new rectangle is 3 yards longer then quadruple the width. If the perimeter is 606 yards what are the dimensions. x = width 4x + 3 = length {three yards longer than quadruple the width} Perimeter of a rectangle = 2(width) + 2(length) 2x + 2(4x + 3) = 606 {substituted width and length into perimeter formula} 2x + 8x + 6 = 606 {used distributive property} 10x + 6 = 606 {combined like terms} 10x = 600 {subtracted 6 from each side} x = 60 {divided each side by 10} 4x + 3 = 243 {substituted 60, in for x, into 4x + 3} width = 60 yds length = 243 yds  Algebra House
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