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A charitable fund's balance is modeled by y = -4.1x^2 + 7.1x + 145, where y is the balance and x is the years after 1996. If no money is added to the fund, in how many years will the fund have a balance of 0? Round to the nearest year.

  • algebra -

    Y = -4.1x^2 + 7.1x + 145 = 0.
    Use Quadratic Formula to find X and get: X = 6.9 0r 7yrs.

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