SOLUTION: Suppose N=x^+2 models the number ofcases of infection, in millions, of a disease x years from now. Approximately how many years will there be 7 million cases. I got this 7=x^+2

Question 106498: Suppose N=x^+2 models the number ofcases of infection, in millions, of a disease x years from now. Approximately how many years will there be 7 million cases.
I got this 7=x^+2
(-x^2)=(-5)
x=25
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Suppose N=x^+2 models the number ofcases of infection, in millions, of a disease x years from now. Approximately how many years will there be 7 million cases.
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7x10^6 = x^2
x = (sqrt7)(10^3)
x = 2.64575*1000
x = 2645.75 years
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Cheers,
Stan H.
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