The graph shows water in a swimming pool over time.

(a) What numbers are possible values of the independent variable? The dependent variable?(b) For how long is the water level increasing? Decreasing?(c) How many gallons of water are in the pool after 90 hr?(d) Call this function ƒ. What is ƒ(0)? What does it mean?(e) What is ƒ(25)? What does it mean?

Transcribed Image Text:

Gallons at Time t f Gallons 4000 3000 2000 1000 0 of Water in a Pool 0 25 50 Hours www. 75 100 t