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March 27, 2017

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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?

Hint: Plug in and calculate, do not convert to a decimal.


Can someone tell me how figure this out step by step recheck my answer PLEASEEEEEE!!! I tried to recheck AND IT DIDN'T COME UP WITH SAME Answer due tommorrow help me please
cost = 6350/(425 - 3(.25)) =$ 14.967

it would cost about $15 million

  • Algebra - ,

    C = 6350 / (425 - 3x). x = 75%.

    DO NOT CONVERT THE % TO DECIMAL!

    C = 6350 / (425-3*75),
    C = 6350 / (425-225),
    C = 6350 / 200 = $31.75 M.

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