SOLUTION: I cannot find an example of this problem worked in my textbook. I even tried my various MathZone learning tools but still could not find an example. This is from Chapter 6.1 Reduci

Question 206549: I cannot find an example of this problem worked in my textbook. I even tried my various MathZone learning tools but still could not find an example. This is from Chapter 6.1 Reducing Rational Expressions - Will someone please provide an example of how to work this type problem with step by step instructions?
Toxic pollutants. The cost, in million of dollars, to remove p% of toxic chemicals from a town's water supply is given by the formula
C= 6,000/200-2x. Answer the following questions:

a. What is the cost to remove 75% of the pollutants?
b. Describe what happens to the cost as the percentage of pollutions removed increased from 75% and moves toward 100%.
c. According to this model, is it possible to remove 100% of the pollution? Why or why not?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Toxic pollutants. The cost, in million of dollars, to remove p% of toxic chemicals from a town's water supply is given by the formula
C= 6,000/200-2x. Answer the following questions:
a. What is the cost to remove 75% of the pollutants?
C = 6000/(200-2*75) = 6000/50 = 120 million dollars
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b. Describe what happens to the cost as the percentage of pollutions removed increased from 75% and moves toward 100%.
Cost increases as the percentage increases.
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c. According to this model, is it possible to remove 100% of the pollution? Why or why not?
No, because C would equal 6000/(200-2*100) = 6000/0 which is undefined.
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Cheers,
Stan H.

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