The federal minimum hourly wage rates have increased over the years. The table shows the rates at the year in which they first took effect, as reported by the U.S. Department of Labor.

a. Make a scatterplot of the data.

b. Find and plot a regression line, and superimpose the line on the scatterplot.

c. What do you estimate as the minimum wage for the year 2018?

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Year 1978 1979 1980 1981 1990 1991 Wage ($) 2.65 2.90 3.10 3.35 3.80 4.25 Year 1996 1997 2007 2008 2009 Wage ($) 4.75 5.15 5.85 6.55 7.25