Answers by visitors named: ~ca~

I was wondering how to post my own question on this site. Can someone help me
Add 12, 8, and three and see what is left over. The left over is the answer.
I think the last one is enzymes, I'm not 100% tho
How do you post your own questions?
I really need help!
Megan are the answers for Health and Physical education 6 Unit 4 lesson 3: Healthy Choices?