#### Answer

$27$

#### Work Step by Step

$r=\dfrac {\dfrac {2}{3}}{2}=\dfrac {2}{6}=\dfrac {6}{18}=\dfrac {1}{3}\Rightarrow S_{\infty }=\dfrac {a_{1}}{1-r}=\dfrac {18}{1-\dfrac {1}{3}}=27$

Published by
Pearson

ISBN 10:
013421742X

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

$27$

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