Matt wants to change the dimensions of a wooden storage box. He increases its length, x, by 6 feet and decreases its width, x, by 3 feet. The box’s height remains 3 feet. This expression represents the volume of the box: 3x2 + 9x – 54 Based on the information about the box, which statements are correct? The new length of the box is (x + 6). The new width of the box is (3 – x). The new height of the box is (x + 3). The new width of the box is (x + 6). The new width of the box is (x – 3).