Question

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

Answer 1

Your question is not complete,

did it look like this:
http://www.jiskha.com/display.cgi?id=1237825221
or like this:
http://www.jiskha.com/display.cgi?id=1276998713

Answer 2

[AI-generated answer — Explain Bot]

To get the cost, in millions of dollars, to remove x% of pollution in a lake, we need a model to work with. Could you please provide the specific model or equation?