Modeling Poverty level
The table gives the millions of people in the United States below the poverty level for selected years from 1990 to 2009.
(a) With t = 0 representing 1990, find a cubic function that models these data.
(b) For the years from 1990 to 2009, use the model to determine the absolute maximum and absolute minimum points. Interpret the coordinates of each point.
(c) Find the absolute maximum and absolute minimum for the data.