Please help me this is hard please explain it to

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Graph y = -|x| + 2. click on the graph until the correct one appears.

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft. what is the area of the stage? enter your answer in the box. ft²