Concept explainers
Percentage of American who smoked cigarettes
Number of years after 1965
Use this formula to solve Exercises 119−120.
120.
a. Does the mathematical model underestimate or overestimate the percentage of American adults who smoked cigarettes in 2005. By how much?
b. Use the mathematical model to project the percentage of American adults who will smoke cigarettes in 2021.
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Introductory Algebra for College Students (7th Edition)
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