B. Never
The event has to happen in order to be complemented. Not every event is complemented, but the event itself can only and always be an event.
Answer:

Step-by-step explanation:
Multiply
.
2/5 plus 2/5 is five so we can assume if we multiply it by 4 it will be 10! 2/5 times 4 equals 10!!! Hope this helps! :D
The vertex is (-1.5, -6.75). So the x-coordinate is -1.5. Hope this helps and if so please leave a good rating and thanks. I really appreciate it. Have a nice day!