Mrs. Ishimitsu is installing a rubber bumper around the edge of her coffee table. The dimensions of the rectangular table are (2x2 – 16) feet and (–x2 4x 1) feet. Which expression represents the total perimeter of the table, and if x = 3, what is the length of the entire rubber bumper? x2 4x – 15; 3 feet x2 4x – 15; 6 feet 2x2 8x – 30; 6 feet 2x2 8x – 30; 12 feet.