Gap net sales, in billions of dollars Year 2011 2012 2013 2014 2015 Sales 14.55 15.65 16.15 16.44 15.80 (a) Find the change in net sales between 2011 and 2015. The change in net sales between 2011 and 2015 is 1.25 billion dollars. (b) Find the average rate of change in net sales between 2011 and 2015. Give units and interpret your answer. Round your answer to two decimal places. The Gap's net sales increased on average by i billion dollars per year v between 2015. (c) From 2011 to 2015, were there any one-year intervals during which the average rate of change was negative? If so, whe The average rate of change was negative from 2014 to 2015. JAN 7 19 tv

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