What’s the area of the shaded region down at the bottom?

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)