#### Answer

$\approx -14.824$

#### Work Step by Step

$S_{n}=\dfrac {a_{1}\left( r^{n}-1\right) }{r-1}=\dfrac {-3.772\times \left( \left( -1.553\right) ^{5}-1\right) }{-1.553-1}\approx -14.824$

Published by
Pearson

ISBN 10:
013421742X

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

$\approx -14.824$

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