The number of taxi accidents is approximated by y=−143.3×2+1823.3x+6820 and the number of injuries is approximated by y=−416.72×2+4416.7x+8500. Let x=0 represents 1990, x=1 represents 1991, and so on. According to the equation for the number of accidents, if the trend continued, how many taxi accidents occurred in 1999? Year Number of accidents 1990 6,820 1993 11,000 1996 12,601
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