1. [8] Steve Martin in his \"Coneheads\" costume stands 12 feet away from a flat mirror on a vertical wall. The height of the mirror is such that the top of his conehead prosthetic appears right at the top of the mirror and the bottom of his feet appear at the bottom of the mirror. He is exactly 7 feet tall from the bottom of his feet to the top of the conehead, and his eyes are 18 inches below the top of the conehead. How tall is the mirror, and how high off of the ground is it mounted?