## Intermediate Algebra (6th Edition)

Geometric Sequence $a_{1} = 2$ $r=3$
Given Sequence : $2,6,18$ Geometric Sequence. First Term: $a_{1} = 2$ Common ratio: $r= \frac{a_{n}}{a_{n-1}} = \frac{a_{2}}{a_{1}} = \frac{6}{2} =3$