#### Answer

$\approx 860.951$

#### Work Step by Step

$S_{n}=\dfrac {a_{1}\left( r^{n}-1\right) }{r-1}=\dfrac {8.423\times \left( 2.859^{5}-1\right) }{2.859-1}\approx 860.951$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$\approx 860.951$

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