Problem:
Given the following table of U.S. population:
| Year | Population (millions) |
| 1790 | 3.929 |
| 1800 | 5.308 |
| 1810 | 7.240 |
| 1820 | 9.638 |
| 1830 | 12.861 |
| 1840 | 17.063 |
| 1850 | 23.192 |
| 1860 | 31.443 |
|
[Extracted from the Census Bureau WWW site.]
find and graph the exponential model which best approximates the data.
Visualization:

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