Functions in the Real World

A cab company charges a flat fee boarding rate in addition to a per mile rate. Using your own experience or some internet research, write an equation that represents a cab company’s rate taking into account the initial flat boarding rate and the per mile rate.

Identify the independent and the dependent variables and describe how they are related.

• What would you consider the domain and the range of the function to be?
• How much would it cost to go from your home to nearest grocery store in this cab?
• Would you suspect that it could be modeled by a linear, a quadratic function, or another type offunction?