1. Your school is trying to refine its textbook budget. The following table shows the average cost of college textbooks required for the general education courses at your college. Let y be the curriculum year and x be the average cost of a textbook. X 40 1974 28 1975 13 1977 26 1978 30 1978 16 1979 20 1981 29 1987 31 1989 55 1998 105 2005 80 2012 Find the formula for the least squares line that fits this data. O A. y =-3692 + 1.77x O B. y =-3,675 -1.87x O C. y =-3,349 -1.887x O D. y =-3,675 + 1.87x