Question

Use the formula for the general term​ (the nth​ term) of a geometric sequence to find the indicated term of the following sequence with the given first​ term, a1​, and common​ ratio, r. find a8 when a1=5, and r=3

Answer 1

Answer:

a8=10935

Step-by-step explanation:

A geometric sequece is a sequence of the form

$a_n=a\cdit r^{n-1}$

in our case we know that $a=a_1=5$ and $r=3$, hence

$a_8=5 \cdot 3^7=10935$