Natasha places a mirror on the ground 24 ft from the base of an oak
 tree. She walks backward until she can see the top of the tree in the
 middle of the mirror. At that point, Natasha's eyes are 5.5 ft above
 the ground, and her feet are 4 ft from the image in the mirror. Find
 the height of the oak tree.
 5.5 ft
 ut
 4 ft
 24 ft