Which of the following are continuous functions? (Select all that apply.)
- The temperature at a specific location as a function of time.
- The temperature at a specific time as a function of the distance due west from New York City.
- The altitude above sea level as a function of the distance due west from New York City.
- The cost of a taxi ride as a function of the distance traveled.
- The current in the circuit for the lights in a room as a function of time.
- None of these.