c. How much contaminant is removed from the tenth (t = 10) to the thirteenth (t = 13) hour of the cleaning process? %3D

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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I want to know c.

. 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?
Transcribed Image 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?
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