
Application Exercises
In the year after warning labels were put on cigarette pack, the number of smokers dropped from approximately two in five adults to one in five. The bar graph shows the percentage of American adults who smoked cigarettes for selected years from 1970. Through 2010.
The Mathematical model
describes the percentage of Americans who smoked cigarettes, p, x years after 1970. Use this model to solve Exercises 97–98.
a. Does the mathematical model underestimate or overestimate the percentage of American adults who smoked cigarettes in 2010? By how much?
b. Use the mathematical model to project the year when only 7% of American adults will smoke cigarettes.

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College Algebra
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