Basic factoring. Please help!

Answer:
3rd Option: -1(x + 15)
Step-by-step explanation:
When we factor our a negative 1, we take the opposite signs of what is given:
-1(x + 15)
To check, we simply just redistribute to check if it matches the original expression:
-x - 15
So the 3rd option is the correct choice.
Answer:
It's the third option (it's correct with you)
Step-by-step explanation:
- X - 15
So here we should the common factor between - x and - 15, where it is - 1 because both of these have minus in common.
Then the answer is:
-X - 15
= - 1 ( x + 15)
Hope this helps you..
Good Luck!