Answer:
The given sequence is an arithmetic sequence having a common difference of 2.15.
Explanation:
The given sequence is 4.15, 6.3, 8.45,.....
In the given sequence pattern may be either arithmetic or geometric.
For Arithmetic Sequence,
There should be a common difference in each successive term of the sequence.





Therefore, the given sequence is an arithmetic sequence having a common difference of 2.15.