Answer:
Look below.
Explanation:
Oof. That must suck. I think that all you have to do to remove the extension is to right click on it and press delete. Thn a thing should slide down from the top of the screen and say something like "are you sure" and then press yes. That should work...
You have to use this format for example $A$2
The format for absolute reference is designated with a dollar sign ($). If both column and, put a dollar sign before and in between the row and column. By doing this, column and row do not change when copied.
Could be all of the above. But for school i'd assume only a suspension.
