Answer: The correct option is 1, i.e., .
Explanation:
The geometric sequence is in the form of,
Where, a is the first term of the sequence and r is the common ratio of the sequence.
It means the term of the sequence is defined as,
So the the term of the sequence is defined as,
It means the geometric sequence is in the form of,
Where, r be any constant.
From the options only is in the form of
with common ratio
.
Therefore, the function can be used to model the graphed geometric sequence is .