Table 1.2 shows the mean annual compensation of construction workers.

(a)  Find the linear regression equation for the data.
(b) Find the slope of the regression line. What does the slope represent?
(c) Superimpose the graph of the linear regression equation on a scatter plot of the data.
(d) Use the regression equation to predict the construction workers’ average annual compensation in the year 2008.

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Table 1.2 Construction Workers' Average Annual Compensation Annual Total Compensation (dollars) Year 1999 42,598 2000 44,764 2001 47,822 2002 48,966