Question

Which of the following recursive formulas represents the same geometric sequence as the formula an=2x3n-1

Answer 1

Hello,

$a_{n}=2*3^{n-1}$
$a_{n-1}=2*3^{n-2}$
$\frac{a_{n}}{a_{n-1}}= \frac{2*3^{n-1}}{2*3^{n-2}}=3$


Answer B