Use the Formula for the General Term (The Nth Term) $a _ { 1 } = 2 , r = - 2$

Multiple Choice

Use the formula for the general term (the nth term) of a geometric sequence to find the indicated term of the sequence
with the given first term, a1, and common ratio, r.
-Find a9 when $a _ { 1 } = 2 , r = - 2$

A) -14
B) 512
C) -1,024
D) 516