#### Answer

1 plus the previous number of circles are added to the right side.

#### Work Step by Step

We can see a staircase pattern formed by the circles. We can follow it to determine the pattern.

Published by
Prentice Hall

ISBN 10:
0133186024

ISBN 13:
978-0-13318-602-4

1 plus the previous number of circles are added to the right side.

We can see a staircase pattern formed by the circles. We can follow it to determine the pattern.

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