document.write( "Question 529383: 1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by \n" );
document.write( "a. What is the cost to remove 75% of the pollutant?\r \n" );
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document.write( "b. What is the cost to remove 90% of the pollutant?\r \n" );
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document.write( "c. What is the cost to remove 99% of the pollutant?\r \n" );
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document.write( "d. For what value is this equation undefined?\r \n" );
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document.write( "e. Do the answers to sections a. through d. match your expectations? Explain why or why not. \n" );
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