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The cost, in millions of dollars, to remove x% of pollution in a lake modeled by C=6,000/200-2x

What is the cost to remove 75% of the pollutant?
For what value is theis equation undefined?

  • Algebra - ,

    Just plug in numbers and calculate. In the case of 75% the asnwer is
    C = 6,000/(200-150) = $120 (Million$)

    The equation is defined for o<=x<100 (%)

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