Answer
Yes it is an arithmetic sequence, and the common difference is 1.3
Work Step by Step
The difference between consecutive terms is constant in an arithmetic sequence.
The sequence: 0.2, 1.5, 2.8, 4.1, ...
Finding the pattern:
Difference between 1st and 2nd term:
2nd term-1st term=Difference
1.5-0.2= 1.3
Difference between 2nd and 3rd term:
3rd term-2nd term=Difference
2.8-1.5= 1.3
Difference between 3rd and 4th term:
4th term-3rd term=Difference
4.1-2.8= 1.3
The common difference is 1.3 and it is constant thus this is an arithmetic sequence.