Answer:
The answer is -5.
Explanation:
As you look at the first 3 terms, all have the common difference of 4. So the next term after -1 is :
19 - 4 = 15
15 - 4 = 11
11 - 4 = 7
7 - 4 = 3
3 - 4 = - 1
- 1 - 4 = - 5
3.5m questions
4.4m answers