Identify whether the given sequence is an arithmetic or
geometrie sequence if it is an arithmetic sequence, write the
common difference and if the sequence is geometric, provide
the common ratio
1. -1, 7, 15, 23, 31, ...
2. 20, 40, 80, 160, 320,
3. 9, 27, 81, -243, 729, ...
4 15, 32, 49, 66, 83, ...
5. 500, 250, 125, 125/2, 125/4, ...​

yung matinong sagot please​