Number of alcohol related traffic fatalities in united states in 2003 was 17,524. For next eight years fatalities decreased at rate of 797 per year. i) Write the linear equation which explains number of fatalities in terms of years after 2003. ii) then use equation to evaluate number of fatalities in 2012. iii) find first year in which fatalities are likely to be less then 7,000 if trend continues.