The percentages of Americans who say there should be a ban on the possession of handguns are shown in Table 51 for various years.

Let p be the percentage of Americans who say there should be a ban on the possession of handguns at t years since 1990.
a. Construct a scatterplot by hand.
b. Is there a linear association, a nonlinear association, or no association?
c. Draw a linear model on your scatterplot.
d. Use your model to estimate the percentage of Americans in 2012 who said there should be a ban on the possession of handguns.
e. Use your model to estimate when 31% of Americans said there should be a ban on the possession of handguns.

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Table 51 Percentages of Americans Who Say There Should Be a Ban on the Possession of Handguns Year 1991 1993 2000 2005 2010 2014 Percent 43 39 36 35 29 26