## College Algebra 7th Edition

common; ratio; $2$; $5$
RECALL: The $n^{th}$ term $a_n$ of a geometric sequence is given by the formula: $a_n=a\cdot r^{n-1}$ where $a$ = first term $r$ = common ratio This means that in the sequence $a_n=2(5)^{n-1}$, $a=2\\ r=5$ Thus, the missing expressions in the given statement (in order) are: common; ratio; $2$; $5$