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The cost, in millions, to remove x% of pollution in a pond is modeled by the equation: C=6350/(425-3x)

What is the cost to remove 75% of the pollution? Plug in and calculate, do not convert to a decimal.

  • Algebra -

    , what value of x would make the equation undefined?

    Hint: Think about what makes an equation undefined. Then calculate what value would make this equation undefined.
    Any ideas????? help

  • Algebra -

    obviously the denominator cannot be zero.
    That would happen when 425 - 3x= 0 or when x = .75

    cost = 6350/(425 - 3(.25)) = 14.967

    it would cost about 15 million

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