Answer:

Solution Steps:
This is an arithmetic sequence since there is a common difference between each term. In this case, adding 5 to the previous term in the sequence gives the next term. In other words,
.
Arithmetic Sequence: 
Find the next term using the Arithmetic Sequence.
Arithmetic Sequence: 

13. 1,6
18. -15,12
19. -7, 1/2
Answer:
x=2 y=2
Step-by-step explanation: