Hours per Day Spent by Adults on Digital Media 5.7 5.9 4.9 4.1 3.5 3.2 2.8 2- 1- 2008 2009 2010 2011 2012 2013 2014 Hours per Day

Extracted text: Hours per Day Spent by Adults on Digital Media 5.7 5.9 4.9 4.1 3.5 3.2 2.8 2- 1- 2008 2009 2010 2011 2012 2013 2014 Hours per Day


Extracted text: b. The finite sequence whose general term is a, = 0.6n + 2, where n = 1, 2, 3, .., 7, models the average number of hours per day adult users in the country spent on digital media n years after 2007. Use this model to 1 Σ a. Does this underestimate or overestimate the rounded value obtained in part (a)? By how much? find = i= 1 a; = 7 i= 1 (Round to the nearest tenth as needed.)