In the past some workers used technology such as e-mail, computers, and multiple phone lines to work at home, rather than in the office. However, because of the need for teamwork and collaboration in the workplace, fewer employees telecommuted than expected. The table lists telecom- muters T in millions during year x.

Find a function f that models the data, where x = 1 corresponds to 1997, x=2 to 1998, and so on.

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x 1997 1998 1999 2000 2001 T 9.2 9.6 10.0 10.4 10.6 2002 T 11.0 2003 11.1 2004 2005 11.2 11.3 2006 11.4