Answer: A. EOA and DOS and also
B. SOE and DOA
Step-by-step explanation:
If you look at angle EOA without regarding line OB, you will notice that it is directly opposite to angle DOS.
The same applies for angle SOE and DOA so they are vertically opposite.
Answer:

Dividing is the same as putting numbers into a fraction. This is N/8. We don't get the answer until we figure out what N is equal to.
Answer:
The graph would look like this