## Intermediate Algebra for College Students (7th Edition)

$a_1 \cdot r^{n-1}$; $\text{first term}$; $\text{common ratio}$
RECALL: The $n^{th}$ term ($a_n$) of a geometric sequence can be found using the formula $a_n=a^1 \cdot r^{n-1}$ where r = common ratio $a_1$ = first term Thus, the missing expressions in the given statements are $\underline{a_1 \cdot r^{n-1}}$; $\underline{\text{first term}}$; and $\underline{\text{common ratio}}$, respectively.