Picture a person standing a certain distance away from a streetlamp at night, with the streetlamp casting a shadow of the person.
1. Find a model for the length s of the shadow of a person of heitght h cast by
a 15-foot-tall streetlamp d feet away.
2. For a 5-foot-tall person, express the length s as a function of d.
3. How does the shadow of a 5-foot-tall compare to that of a 6-foot tall person
when both are standing 20 feet from the streetlamp?
4. How far away does the 6-foot-tall person have to be for the person's shadow
to be 6 feet long?
5. Write a / page summary describing, what causes the shadow lengths to
change? Can you find a person height given the length of the person
shadow?