The perimeter of the rectangle

The length, l, of a rectangle is 4 inches greater than its width, w. The perimeter of the rectangle is at least 30 inches. What inequality shows the range of possible widths of the rectangle?


i = (Correct answer is: ?) Wrong answer


l=4+w p=2l+2w p>=30   p=2l+2w p=2(4+w)+2w p=8+4w  8+4w>=30 4w>=22 w>=11/2  i=?

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