A Model for How Long Our Coal Resources Will Last

question 89

Multiple Choice

A model for how long our coal resources will last is given by where r is the percent increase in consumption from current levels of use and T is the time (in years) before the resources are depleted. What percent increase in consumption of coal will deplete the resources in 38.1 years? Round to the nearest tenth of a percent.

• A)9.9%
• B)8.7%
• C)10.5%
• D)10.1%
• E)8.1%

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