Answer:
9
Step-by-step explanation:
18:2
?:1
?=9
Answer:
B
Step-by-step explanation:
The explicit rule for a geometric sequence is
= a₁ 
where a₁ is the first term and r the common ratio
Here a₁ = 64 and r =
=
= 2 , then
= 64
→ B
I think u forgot to put pic for we can see the triangle