The # of taxi accidents is approximated by y=-143.3x^2+1823.3x+6820 and the # of injuries is approximated by y= -416.72x^2+4416.7x+8500

Let x=0 represents 1990, x=1 represents 1991, and so on.
According to the equation for the # of accidents, if the trend continued, how many taxi accidents occurred in 1999 and injuries in 1999

Question

The # of taxi accidents is approximated by y=-143.3x^2+1823.3x+6820 and the # of injuries is approximated by y= -416.72x^2+4416.7x+8500

Let x=0 represents 1990, x=1 represents 1991, and so on.
According to the equation for the # of accidents, if the trend continued, how many taxi accidents occurred in 1999 and injuries in 1999

anonymous · Answer

okay so we are looking for taxi accidents and injuries in 1999,
what is our value for x in 1999 if x=0 in 1990?

anonymous · Answer

x=9, so just plug that into the equations and you'll have you answer by solving :)