X+3-5x+7+4y i need to simplify this by using distributive property and i need to show work

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

Are the corresponding angles congruent? explain why or why not.

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two