Building a
Step Function
  1. Ceiling
  2. Greatest Integer
  3. Graphing
  4. Modeling

Dime a Minute?
What factors are important when determining the price of a phone call? How do you distinguish the price of a five minute call versus a five and one-half minute call? How do phone companies use functions to determine your local phone bill?

Follow each step in Building a Step Function to investigate these questions.

[introduction] [step functions] [scenarios] [telephone bill] [grading scale]