The cost, in millions of dollars, of a 30-second television ad during the Super Bowl in the years 2000 to 2010 can be approximated by C(t) = 0.14t + 1.1 million dollars (0 t 10) (t = 0 represents 2000). What was the average cost (in millions of dollars) of a Super Bowl ad during the given period? (Round your answer to one decimal places.)