Aball is dropped from a height of 30 ft. each time it bounces to 60% of the previous height. what is the total vertical distance the ball has travelled when it hits the ground for the 8th time? (answer to 2 decimal places) 102.90 ft 117.48 ft 73.74 ft 118.49 ft

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?