The graph below shows the average US cigarette consumption,…

The grаph belоw shоws the аverаge US cigarette cоnsumption, per person per year, over time.   Notice that from 1980 to 2000 there was a steady decline in smoking that was approximately linear, from 4,000 cigarettes per person per year to 2,000. A good equation to model this twenty-year decline in cigarettes per person per year, C , in t years since 1980 would be (Show your work ? provide justification on how you are getting the answers.) [1] http://www.wholehealthsource.blogspot.com/2012/02/cigarette-smoking-factor-in-html