The table shows the U.S. Bureau of Census population data for St. Louis, Missouri. 0 203040 44 = years since 1950 P= population (thousands) 857 622 453 397 | 368 a. Plot the data points. b. Find the equation of the regression line and add its graph to your data plot. c. Explain in practical terms the meaning of the slope of the regression line. d. Estimate the population of St. Louis in the year 2002. e. How many years will it take until the population of St. Louis drops to 200,000