The number (in millions) of international tourists who travel to India in the years 2009, 2010, 2011, 2012, and 2013 is 5.1, 5.7, 6.2, 6.5, and 6.6, respectively. Let n be the number (in millions) of international tourists who travel to India in a year.
a. Use points on a number line to describe the given values of n.
b. Did the number of international tourists who traveled to India increase, decrease, stay approximately constant, or none of these from 2009 to 2013? Explain.
c. Did the increases in the number of international tourists who traveled to India increase, decrease, stay approximately constant, or none of these from 2009 to 2013? Explain.