Gross domestic product: The following table16 shows the U.S. gross domestic product (GDP) G, in trillions of dollars, as a function of the year t. a. Explain in practical terms what G(1999) means, and...

Gross domestic product: The following table16 shows the U.S. gross domestic product (GDP) G, in trillions of dollars, as a function of the year t.

a. Explain in practical terms what G(1999) means,

and find its value.

b. Use functional notation to express the gross domestic product in 2001, and estimate that value.

c. What is the average yearly rate of change in G

from 2003 to 2005?

d. Use your answer to part c to predict the gross

domestic product in the year 2013.