The table below gives sales, in billions of dollars, of Pepsico, which operates two major businesses: beverages (including Pepsi) and snack foods.1 Year 2007 2008 2009 2010 2011 2012 Sales 39.47 43.25 43.23 57.84 66.50 65.49 Year 2013 2014 2015 2016 2017 2018 Sales 66.42 66.68 63.06 62.80 63.53 64.66 (a) Find the change in sales between 2011 and 2018. i billion dollars (b) Find to 2 decimal places the average rate of change in sales between 2011 and 2018. Give units and interpret your answer. i www.pepsico.com, accessed March 3, 2020.The table below shows the total amount spent, in billions of dollars, on tobacco products in the US. Year 1987 1988 1989 1990 1991 1992 1993 Spending 35.6 36.2 40.5 43.4 45.4 50.9 50.5 Find the average rate of change in the amount spent on tobacco products between 1988 and 1993. Give units. Round your answer to one decimal place. The average rate of change in the amount spent on tobacco products between 1988 and 1993 is eTextbook and Media During this six-year period, is there any interval during which the average rate of change was negative? If so when? If not, enter NA in both entry areas. From to