Posted by **Al** on Sunday, October 3, 2010 at 7:02pm.

In cost in millions of dollars to remove x% of pollution is a lake modeled by C=5,000 over 200-2x.

(a) What is the cost to remove 50% of the pullutant.

- Algebra -
**Reiny**, Sunday, October 3, 2010 at 7:19pm
replace x with 0.5 in the formula and solve for C

C = 5000/(200-2(.5))

take over ....

(something fishy here, the cost increased from 25 Million for doing nothing at all, to only 25.13 Million to remove 50%)

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