The estimated number of users of one program from 19952005 d
     The estimated number of users of one program from 1995-2005 defines a function that has a y-value for every x-value in the interval 1995 Less than or equal to x Less than or equal to 2005. However, the table shows data for just six x-values. Let y = f(x) represent the number of users and x represent the Years.  What is the independent variable?  The number of users  The function f  There are no independent variables  The years  What is the dependent variable?  There are no dependent variables  The number of users  The function f  The years  Find f(2003).  f(2003) = million 
  
  Solution
a. The years b. The number of users. c. 82 million
