SUBWAY has grown to include more than 20,000 restaurants worldwide since they opened their first one in 1965. The accompanying data show the number of SUBWAY restaurants worldwide from 1985 through 2002. Fit a quadratic equation to these data and estimate the number of SUBWAY restaurants worldwide in 2010.

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SUBWAY SUBWAY Restaurants Year Restaurants Year 1985 596 1994 9893 991 11,420 1986 1995 1987 1810 1996 12,516 1988 2888 1997 13,066 1989 4071 1998 13,600 1990 5144 1999 14,162 1991 6187 14,662 2000 7327 1992 2001 15,762 8450 17,482 1993 2002