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Eliminating pollution If the pollution of Lake Erie were stopped suddenly, it has been estimated that the level y of pollutants would decrease according to the formula y = yoe-0.3821, where t is the time in years and y, is the pol- lutant level at which further pollution ceased. How many years would it take to clear 50% of the pollutants?

Eliminating pollution If the pollution of Lake Erie were stopped suddenly, it has been estimated that the level y of pollutants would decrease according to the formula y = yoe-0.3821, where t is the time in years and y, is the pol- lutant level at which further pollution ceased. How many years would it take to clear 50% of the pollutants?

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.5: Properties Of Logarithms
Problem 60E
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Eliminating pollution If the pollution of Lake Erie were stopped suddenly, it has been estimated that the level y of pollutants would decrease according to the formula y = yoe-0.3821, where t is the time in years and y, is the pol- lutant level at which further pollution ceased. How many years would it take to clear 50% of the pollutants?
Transcribed Image Text:Eliminating pollution If the pollution of Lake Erie were stopped suddenly, it has been estimated that the level y of pollutants would decrease according to the formula y = yoe-0.3821, where t is the time in years and y, is the pol- lutant level at which further pollution ceased. How many years would it take to clear 50% of the pollutants?
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