. Cleaning dirty water. Many physical processes are exponential in nature. A typical way of cleaning a tank of contaminated water is to run in clean water at a constant rate, stir, and let the mixture...

I want to know c.

Extracted text: . Cleaning dirty water. Many physical processes are exponential in nature. A typical way of cleaning a tank of contaminated water is to run in clean water at a constant rate, stir, and let the mixture run out at the same rate. Suppose there are initially 100 pounds of a contaminant in a large tank of water. Assume that the cleaning method described here removes 10% of the remaining contaminant each hour. Round your answers to one decimal place. a. Find an exponential formula that gives the number of pounds of contaminant left in the tank after t hours. y = 100*(90%)^t %3D b. How much contaminant is removed during the first three hours? 27.1 c. How much contaminant is removed from the tenth (t = 10) to the thirteenth (t = 13) hour of the cleaning process?