Read the problem below.
angelo is riding in a hot air balloon. the balloon begins at 700 feet
above the ground. it drops 200 feet, rises 500 feet, and then drops
100 feet. write and evaluate an expression to find angelo's position
relative to the ground.

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?