A substance x multiplies exponentially, and a given quantity of the substance doubles every 20 years. If we have 3 lb of substance x at the present time, how many lb will we have 7 years from now?

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381

Differential Equations and Their Applications: An Introduction to Applied Mathematics | 3rd Edition

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A substance x multiplies exponentially, and a given quantity of the substance doubles every 20 years. If we have 3 lb of substance x at the present time, how many lb will we have 7 years from now?

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##### Textbook: Differential Equations and Their Applications: An Introduction to Applied Mathematics

##### Edition: 3

##### Author: M. Braun

##### ISBN: 9780387908069

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A substance x multiplies exponentially, and a given quantity of the substance doubles

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