The table of real data can be modeled by a line. However, the line may not be an exact model, so answers may vary.
U.S. Population The population P of the United States in millions during year x is shown in the table.
x | 1970 | 1980 | 1990 | 2000 | 2010 |
P | 203 | 227 | 249 | 281 | 309 |
Source: U.S. Census Bureau.
(a) Make a scatterplot of the data.
(b) Find a point–slope form of a line that models these data.
(c) Use your equation to estimate what the U.S. population was in 2005.
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