E-Book Audience The number of adults (in millions) using e-book devices is expected to climb in the years ahead. The projected number of ebook readers in the United States from 2011 through 2015 is given Year 2011 2012 2013 2014 2015 Number,y 27.7 32.4 37.3 54.4 57.1 (a) Letting x = 0 denote 2011, nd an equation of the least-squares line y for these data. y= (b) Use the result of part (a) to estimate the projected average rate of growth of the number of e-book readers between 2011 and 2015. :] million users/yr Need Help? E :-/2 Points] TANAPCALCBR10 8.4.013. Mi Mass-Transit Subsidies The following table gives the projected state subsidies (in millions of dollars) to a certain transit authority over a 5-year period (X = 1 corresponds to the rst year). Year, x 1 2 3 4 5 Subsidy, y 19 23 26.75 27.25 33.25 (a) Find an equation of the least-squares line for these data. y: (b) Assuming that the trend continued, estimate the state subsidy to the MBTA (in millions of dollars) for the eighth year (x = 8). (Round your answer to one decimal place.) $ :] million Need Help? @@