The table gives the gross domestic product (GDP), in billions of dollars, of the United States for

Question:

The table gives the gross domestic product (GDP), in billions of dollars, of the United States for selected years from 2000 and projected to 2070.
(a) Create a scatter plot of the data, with y representing GDP in billions of dollars and x representing the number of years past 2000.
(b) Find the quadratic function that best fits the data.
(c) Find the cubic function that best fits the data.
(d) Graph each of these functions on the same axes as the data points, and visually determine which model is the better fit for the data.