Answer:
Step-by-step explanation:
Considering the geometric sequence


As the common ratio '
' between consecutive terms is constant.



The general term of a geometric sequence is given by the formula:

where
is the initial term and
the common ratio.
Putting
,
and
in the general term of a geometric sequence to determine the 12th term of the sequence.







∵ 

Therefore,
Question 11= B
Question 13= C
I don't know how to do question 12
X=-2
You can also check by plugging -2 in for x. Here is a picture. Please notify me if I made an error!
I think the answer would be none