Consumer expenditures, in millions of dollars, on all types of books in the united states for the years 1995-2005 can be modeled by the function defined by upper b left parenthesis x right parenthesis equals 27 comma 510 e superscript 0.0401 x, where x equals 0 represents 1995, xequals1 represents 1996, and so on. approximate consumer expenditures for 2003.