The johnsons want to cover their backyard with new grass. their backyard is rectangular, with a length of 3x – 5 feet and a width of 4x – 10 feet. however, their rectangular swimming pool, along with its surrounding patio, has dimensions of x + 8 by x – 2 feet. what is the area of the region of the yard that they want to cover with new grass? 6x2 – 55x + 104 ft2 x2 + 6x – 16 ft2 11x2 – 56x + 66 ft2 12x2 – 50x + 50 ft2