#### Answer

$-4$

#### Work Step by Step

From the graph we get
$a_{1}=-4;a_{2}=-1;a_{3}=2;a_{4}=5;a_{5}=8$
$\Rightarrow a_{1}=-4$

Published by
Pearson

ISBN 10:
013421742X

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

$-4$

From the graph we get
$a_{1}=-4;a_{2}=-1;a_{3}=2;a_{4}=5;a_{5}=8$
$\Rightarrow a_{1}=-4$

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