Arectangular escercise math has a permeter of 36 feet. the length of the mat is twice the width. write and solve an equation to determine the length, in feet, of the mat. then find the area, in square feet. of the mat

Several paint mixtures are made by mixing blue paint and white paint. paint colors blue paint white paint mixture a 5 cups 12 cups mixture b 6 cups 6 cups mixture c 4 cups 12 cups mixture d 5 cups 6 cups which mixture has the highest ratio of blue paint to white paint