13.) - 1/2
14.) 1 1/3 (4/3)
15.) - 3
Is there a picture? I don't know how to answer without the actual problem. Sorry,
Answer:

Step-by-step explanation:
Use Distance Formula

Substitute

Simplify

Simplify

Add

Answer:
2nd or 3rd one
Step-by-step explanation:
I say that because the equation is over -3 for both.
Hope this helps you! :)
Answer:
3. is the correct answer
Step-by-step explanation: