Airline Passengers The table shows the number of enplaned passengers worldwide betwe...

Airline Passengers The table shows the number of enplaned passengers worldwide between 2000 and 2007.

a. Describe the direction and concavity suggested by the scatter plot. What types of models might fit this behavior?

b. Write an appropriate model for the data.

c. Does the model in part b make sense for extrapolation? Explain.