Answer:
I think we have to use commas in lists because if we didn't it would be all together and it would be more hard to read.
Step-by-step explanation:
I hope this helps
Yes but it dose depend on the problem
Answer:
6xsquare
Step-by-step explanation:
that is my answer
If n = 5, then 9n = 45
45 - 15 = 30, which is the same thing as 6n
