American newspaper circulation enjoyed continuous growth until the 1970's where it roughly leveled off then began a steady decline in the 1990's, presumably due to the internet. Question 4 < > American Newspaper Circulation 70 20 50 Circulation (x1000) 50 40 0 10 10 20 20 30 40 50 50 Year Circulation Year (1000s) 1940 41.132 1945 48.384 1950 53.829 1955 56.147 1960 58.882 1965 60.358 1970 62.108 1975 60.655 1980 62.202 1985 62.766 1990 62.328 1995 58.193 2000 55.773 2005 53.345 2011 44.421 00 60 70 10 80 90 a. Consider 1940 to be year 0 and use regression to find a quadratic equation to model the data. Round the numbers in your equation to 3 decimal places. y b. Use your equation to predict the circulation in 2020. Round to nearest newspaper (not in 1000s).