Question 206549
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.