I the question "List all the numbers that have an absolut value of 12."

what does it mean what is it asking???

absolute vaulue just means that you take only the number for an answer and don't worry about the signs. It looks like this:

|12| that is the symbol for the absolute value of twelve

The answer would be 12 since there are already no signs attached

Try to think of numbers that when their signs are taken away, equal twelve. Or, as seen in the example I gave, look for just the number 12.

You should come up with the answers 12 and -12.