The cost in millions of dollars, to remove x%of pollution in a lake is mideled by C=6.000/200-2x. A.) What is the cost to remove 80% of the pollutant? Remember that the cost is in millions of dollars. B.) For what value is the equation undefined? What does your answer mean?

Question

The cost in millions of dollars, to remove x%of pollution in a lake is mideled by C=6.000/200-2x.  A.) What is the cost to remove 80% of the pollutant? Remember that the cost is in millions of dollars.  B.) For what value is the equation undefined?  What does your answer mean?