Chapter 4.1, Problem 48E

GDP Use the following information to answer Exercises 47–50. The gross domestic product (GDP; in tens of trillions of U.S. dollars) for China and the United States can be approximated as follows:

$\begin{array}{l}China:f\left(x\right)=.00011{\left(1.102\right)}^x,\\ UnitedStates:g\left(x\right)=.0132{\left(1.067\right)}^x,\end{array}$

where $x=60$ corresponds to the year 1960. (Data from: www.worldbank.org.)

Find the projected GDP in 2015 and 2025 for the United States.