SOLUTION: The consumption of cigarettes is declining. If t represents the number of years since 1985, then the consumption, C, is modeled by C=-14.25+598.69 where C represents the num

Algebra ->  Linear-equations -> SOLUTION: The consumption of cigarettes is declining. If t represents the number of years since 1985, then the consumption, C, is modeled by C=-14.25+598.69 where C represents the num      Log On


   

Question 251940: The consumption of cigarettes is declining. If t represents the number of years since 1985, then the consumption, C, is modeled by
C=-14.25+598.69
where C represents the number of billions of cigarettes smoked per year.
Write an inequality to show the first year cigarette consumption is less than 200 billion cigarettes a year.
Solve the inequality from part a.

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
C=-14.25t+598.69
200=-14.25t+598.69
-14.25t=200-598.69
-14.25t=-398.69
t=-398.69/-14.25
t=27.98 or 28 years.
1985+28=2013 is the projected year for 200,000,000 smokers.