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algebra

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From 1993 to 2003 the cumulative number
N of AIDS cases in thousands can be approximated by
, where corresponds to
the year 1993.
N= -2x^2+ 76x + 430 x=0

  • algebra -

    N = -2x^2 + 76x + 430 = 0.
    Solve, using the Quad. Formula and get:
    x = 43, and -5.
    Select + value of x:
    x = 43,000 cases.

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