The time t in years for an amount of money invested at an interest rate r (in

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The time t in years for an amount of money invested at an interest rate r (in decimal form) to double is given byimage


This is the doubling time. Find the doubling time to the nearest tenth for an investment at each interest rate.


(a) 2% (or 0.02) 


(b) 5% (or 0.05) 


(c) 8% (or 0.08)

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Related Book For  answer-question

Intermediate Algebra

ISBN: 9780134895987

13th Edition

Authors: Margaret Lial, John Hornsby, Terry McGinnis

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