Posted by Anonymous on Saturday, January 22, 2011 at 4:38pm.
Did you leave out some information?
Re-check your problem. I think you are missing a part here.
pollution in a lake modeled by ?
sorry it didn't paste the formula.. lets try again....
1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by C=6000/(200-2x)
a. What is the cost to remove 75% of the pollutant?
I got $3,022,670,025
C = 6000/(200 - 2x)
C = 6000/(200 - 2(75))
C = 6000/(200 - 150)
C = 6000/50
C = 120 mil
120,000,000 million
or, is it
C = 6000/(200 - 2(.75))
C = 6000/(200 - 1.5)
C = 6000/198.5
C = 30.2267 mil
30,226,700 million
I think it's the first, but I am not a tutor
Thank you.. I too got both those answers.. at least the second answer you got to an extent.. not sure which is correct myself.
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