Answer:
The common difference is +6.
Step-by-step explanation:
7-1=6
13-7=6
19-13=6
You should have a general idea of what I'm saying now.
As for the second part, you just add 6 to get the answers. Since it's asking for the next three terms....
25+6=31
31+6=37
37+6=43
Hope this helps! :)
