Environmental and wildlife preservation ensures future generations will have available resources and can enjoy the beauty of Earth. On the other hand some of the damage humans have already done to the environment is expensive and time consuming to eradicate. Application PracticeAnswer the following questions. Use Equation Editor to write mathematical expressions and equations. First save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to maintain proper formatting. 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?