11. According to the U.S. Energy Information Administration, the table below shows the annual fuel consumption in gallons per car for U.S. passenger cars. Fuel (gpc) 735 712 711 715 664 603 579 587 578 553 549 Year (after 1900) 70 75 76 78 79 80 81 82 83 84 85 a. Find an equation for the line of best fit for predicting the fuel consumption from the year. b. Use your equation to estimate fuel consumption in 1987. c. Is the answer to part b an instance of interpolation or extrapolation? d. Find the center of gravity of this data set. Show that this ordered pair satisfies the line of best fit. e. Find the correlation coefficient. 11. a. b. c. d. e.