Question 212271:  Toxic pollutants. The annual cost in dollars for removing 
p% of the toxic chemicals from a town’s water supply is 
given by the formula 
C(p)=500,000/100-p
 
a) Use the accompanying graph to estimate the cost for 
removing 90% and 95% of the toxic chemicals. 
b) Use the formula to find C(99.5) and C(99.9). 
c) What happens to the cost as the percentage of 
pollutants removed approaches 100%? 
 Answer by checkley77(12844)      (Show Source): 
You can  put this solution on YOUR website! C(p)=500,000/100-p 
c(p)=500,000/(100-90) 
c(p)=500,000/10 
c(p)=50,000 ans. 
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c(p)=500,000/(100-95) 
c(p)=500,000/5 
c(p)=100,000 ans. 
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c(p)=500,000/(100-99.5) 
c(p)=500,000/.5 
c(p)=1,000,000 ans. 
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c(p)=500,000/(100-99.9) 
c(p)=500,000/.1 
c(p)=5,000,000 ans. 
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As the percentace approaches 100% the cost approaches infinity. 
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