It would be D because in order to get rid of the fraction and the value of k you need to multiply -4 to the entire equation. Hope this helps love!
Answer:
For mean it's the average. You add all three numbers (13, 13 , 10), then you divide it by three since their are three numbers. Average would be 12.
Hope this helps (:
It’s a for sure I really think it’s A i don’t know
