Simplify 12x -18y+3x-3y

What is the measure of ac? 5 units 13 units 26 units 39 units

The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).