Although your friend has a family history of heart disease, he smokes. on average. 25
Chapter 3, Problem 116(choose chapter or problem)
Although your friend has a family history of heart disease, he smokes. on average. 25 cigarettes per day. He sees the table showing incidence ratios for heart disease (see Exercises 103-!06) a nd feels comfortable that they are less than 2,compared to 9 and JO fo r lung cancer. He claims that all family deaths have been from heart disease and decides not to gi\'e up smoking. Use the given function and its graph to describe some additional information not given in the table that might influence his decision.
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