Posted by **Devon** on Tuesday, July 13, 2010 at 3:37pm.

1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by

a. What is the cost to remove 75% of the pollutant?

b. What is the cost to remove 90% of the pollutant?

c. What is the cost to remove 99% of the pollutant?

d. For what value is this equation undefined?

e. Do the answers to sections a. through d. match your expectations? Explain why or why not.

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