Answer
$5.758$
Work Step by Step
We need to use an exponential decay model such as:
$y= 6.5( \dfrac{1}{2})^{t/5715}$
The amount after $1000$ years is:
$y= 6.5 \times ( \dfrac{1}{2})^{1000/5715} \approx 5.758$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 5 - 5.5 - Exponential and Logarithmic Models - 5.5 Exercises - Page 405: 22
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