Mathematics B Regents High School Examination - The University Of The State Of New York, 2007 Page 14

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28 Since January 1980, the population of the city of Brownville has grown
x
according to the mathematical model y = 720,500(1.022)
, where x is
the number of years since January 1980.
Explain what the numbers 720,500 and 1.022 represent in this model.
If this trend continues, use this model to predict the year during
which the population of Brownville will reach 1,548,800. [The use of
the grid on the next page is optional.]
[14]
Math. B – Jan. ’07

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