anonymous
  • anonymous
A study by the Partnership for a Drug-Free America indicated that, in 1998, 42% of teens in grades 7 though 12 had recently used cigarettes. A similar study in 2005 indicated that 22% of such teens had recently used cigarettes. Write a linear model that relates the percent of teens that recently used cigarettes y to the number of years after 1998, x.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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mathteacher1729
  • mathteacher1729
Consider 1998 as year "zero". That means 2005 is year "seven". The question is now this: Find the equation of the line through the points: (0,42) and (7,22) Hope this helps. :)
anonymous
  • anonymous
if we assume x as year and y as percentage we have 2 points (1998,42) & (2005,22) so y=(-20/7)*(x-1998)+42.
anonymous
  • anonymous
Thank you very much :)

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