If the Pollution of Lake Erie Were Stopped Suddenly, It

question 140

Multiple Choice

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 = y _o e ^-0.3937t , where t is the time in years and y _o is the pollutant level at which further pollution ceased. How many years would it take to clear 59% of the pollutants?

• A)t = 0.58 years
• B)t = 1.34 years
• C)t = 2.02 years
• D)t = 0.98 years
• E)t = 2.26 years

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Definitions:

Declaration Of Independence

The document by which the Thirteen Colonies in North America announced their separation from the British Empire and their intention to form an independent nation in 1776.

Income Inequality

The unequal distribution of household or individual income across the various participants in an economy, which often leads to social and economic disparity.

National Income

The total value of all goods and services produced by a country's economy over a specific period, often used to gauge economic health.

Top 1 Percent

Refers to the wealthiest 1% of the population, often highlighted in discussions of income inequality and economic policy.