Posted by becca on Wednesday, December 14, 2011 at 12:45pm.
The cost, in millions, to remove x% of pollution in a pond is modeled by the equation: C=6350/(4253x)
What is the cost to remove 75% of the pollution? Plug in and calculate, do not convert to a decimal.

Algebra  becca, Wednesday, December 14, 2011 at 2:06pm
, 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  Reiny, Wednesday, December 14, 2011 at 2:35pm
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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