Questions 9-10:

A beacon is 16 feet long and a 5 foot boy is moving away from its base at a rate of 4 feet per second.

At what rate is the tip of the boy's shadow moving away when he is 18 feet from the lighthouse?

4.8 ft/sec

5.6 ft/sec

5.8 ft/sec

6 ft/sec

None

At what rate does the boy's shadow grow?

4.8 ft/sec

5.6 ft/sec

5.8 ft/sec

6 ft/sec

None