Math Use the U.S. GDP figures shown below to answer these questions:

(a) What is the actual number of dollars for 1970? Show all the necessary digits.

(b) What is the percent of increase for each decade?

(c) Calculate the total percent of increase from 1970 to 2000.

(d) Determine the average yearly increase in the GDP for the period shown.

Year GDP ($)

1970 1.036 trillion 1980 2.784 1990 5.744 2000 9.963