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| Question 1001682:  1. Pollution is expensive to clean up. The cost to clean up p% of pollution is modeled by:
 C=12000/(400-4p )  Where C is the cost of clean up in millions of dollars and p is the percentage of pollution.
 A. How much will it cost to remove 80% of the pollution? My answer, 150 million
 B. How much will it  cost to remove 95% of pollution?  My answer ,600 million
 C. How much does it cost to remove 99% of pollution? My answer,   3,000 million or 3 billion
 D.For what value(s) is this equation undefined?
 Answer by Theo(13342)
      (Show Source): 
You can put this solution on YOUR website! since 400 - 4p is the denominator, it will be undefined when 400 - 4p = 0. that will occur when p = 100% because 400 - 4*100 = 400 - 400 = 0.
 
 you cannot divide by 0, so the answer, when the denominator is equal to 0, is undefined.
 
 your other answers look ok.
 
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