1. The numbers of subscribers S (in millions) to wireless networks from 2006 through 2012 are shown in the table. Year Subscribers, S (in millions) 2006 233.0 2007 255.4 2008 270.3 2009 285.6 2010 296.3 2011 316.0 2012 326.5 a. Use a graphing utility to create a scatter plot of the data, with t = 0 corresponding to 2006. Make a sketch of the scatter plot below. b. What is the equation for the line of best fit for the data? C. What is the regression correlation coefficient (round to four decimal places)? Is the line of best fit a good model for the data? Explain. d. Use the model to predict the number of subscribers in 2015 (round to the nearest integer). e. Use the model to predict in what year the number of subscribers will be 400 million