5points how would you describe the lines represented by railroad tracks? explain

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?