Margot is sewing a ribbon on a seam along the perimeter of a square pillow. the side length of the pillow is 2x2+1 inches. she plans to make a similar pillow, including the ribbon, whose side length is 4x−7 inches. what expression can be used for the length of ribbon that she needs for both pillows, and what is the length if x = 3.5?
2x2+4x−6; 22.0 inches
2x2+4x−6; 32.5 inches
4(2x2+4x−6; ) 88.0 inches
4(2x2+4x−6; ) 130.0 inches