Math
posted by Kimberly .
I need help with these three math question.
1st question. What is the additive inverse of 5 on the 12hour clock?
2nd question. What is the equivalent number on the 12hour clock. 22 the choices for this question is, 5 or 2 or 3 or 1.
3rd question. I need to find the additive inverse of 9 on the 12hour clock.
I really am having a tough time with these questions, can someone please help me.

The additive inverse is the # which when added to a number equals zero.
interesting questions. If you consider 12 on the clock to be '0", the 3 would have 3 as an "AI".
If you consider the number you are starting from to be "0" then = or  12 would always give the number back to you.
Q #2 might hold the answer because of the choices given. The only number that is 22 hours away form 12 is 2.
I would consider using 12 as zero for the other questions as well.