Posted by Chelsea on Tuesday, December 13, 2011 at 7:47pm.
The cost, in millions, to remove x% of pollution in a pond is modeled by the equation:
.
What is the cost to remove 75% of the pollution?
Hint: Plug in and calculate, do not convert to a decimal.
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.

Algebra  Reiny, Tuesday, December 13, 2011 at 8:37pm
What equation?
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