The annual number of cases can be modeled using a quadratic equation y = 14x2 – 9x + 1. the variable x represents the number of
years after 2008. the variable y represents the number of pertussis cases in year x. according to the equation, in what year can the county be expected to have 2,619 cases of pertussis?
1 answer:
The annual number of cases can be modeled using a quadratic equation y = 14x2 – 9x + 1. the variable x represents the number of years after 2008. the variable y represents the number of pertussis cases in year x. according to the equation, in what year can the county be expected to have 2,619 cases of pertussis?
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➷ can be simplified to 2
Multiply 2 by 6 to get the simplified version for part 1
=
can be simplified to
Multiply 2 by 3 to get the simplified version:
=
It would be:
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