Pollution from a factory is entering a lake. The rate of concentration of the pollutant at time t is given by P ' ( t ) = 90 t 1/2 , where t is the number of years since the factory started introducing pollutants into the lake. Ecologists estimate that the lake can accept a level of pollution of 4850 units before all fish life in the lake ends.  a. Set up the definite integral that gives the total pollutant concentration in the lake after 4 years. b. Can the factory operate for 5 years without killing all the fish in the lake?

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.7: Applications
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Pollution from a factory is entering a lake. The rate of concentration of the pollutant at time t is given by P ' ( t ) = 90 t 1/2 , where t is the number of years since the factory started introducing pollutants into the lake. Ecologists estimate that the lake can accept a level of pollution of 4850 units before all fish life in the lake ends. 

a. Set up the definite integral that gives the total pollutant concentration in the lake after 4 years.

b. Can the factory operate for 5 years without killing all the fish in the lake?

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