20 points) The following data shows the total spend on Research and development by institutions of higher learning in the US, in billions of dollars for the period 2003 - 2011. Find the best fit equation for the data shown. Years (since 2000) 3 4 5 6 7 8 9 10 11 Spending ($ in billions) 17.2 25.7 32.3 37.6 42.1 46.4 49.4 52.4 55.2 a. Find the equation of best fit. b. Project spending in 2016 if this trend continues