please help! will give brainliest!

Answer:
The answer is 15.
Step-by-step explanation:
I struggle a bit with impute output tables but this one was pretty easy.
Basically the way my epic teacher taught me is that you take the larger numbers (in this case the number on the right side) and divide by the smaller number (the left) repeat for all the numbers and you find a pattern.
Like 45/3=15 and 90/6=15 and 120/8=15
so the pattern you see is 15.
hope this helps!