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March 3, 2015

March 3, 2015

Posted by **kim** on Saturday, March 10, 2012 at 7:31pm.

The percentage, p, of the total population (18 and older) who smoked t years after 1965 can be approximated by the model p=0.55t + 41.67, where t is the number of years after 1965.

Note that t=0 corresponds to the year 1965, t=9 corresponds to 1974, etc.

a. Determine the percentage of the population who smoked in 1991 (t=16)

b. Use the formula to determine the year when the percentage of smokers will be 15% (p=15)?

- Algebra -
**Ms. Sue**, Saturday, March 10, 2012 at 7:36pm

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