Smoking The table gives the percent of adults aged 18 and over in the United States who reported smoking for selected years.
a. Write the equation that is the best fit for the data, with x equal to the number of years after 1990.
b. What does the model estimate the percent to be in 2012?
c. When will the percent be 16, according to the model?
Year | Smoking |
1999 | 23.5 |
2000 | 23.2 |
2001 | 22.7 |
2002 | 22.4 |
2003 | 21.6 |
2004 | 20.9 |
2005 | 20.9 |
2006 | 20.8 |
2007 | 19.7 |
2008 | 20.5 |
2009 | 20.6 |
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