#### Answer

Arithmetic sequence
$d=3$

#### Work Step by Step

$13-10=10-7=7-4=4-1=3$
So this is arithmetic sequence
$d=a_{n-1}-a_{n}=3$

Published by
Pearson

ISBN 10:
013421742X

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

Arithmetic sequence
$d=3$

$13-10=10-7=7-4=4-1=3$
So this is arithmetic sequence
$d=a_{n-1}-a_{n}=3$

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