The brown stuff is called plaque. This forms on your teeth when you eat and its something you can't get rid of. There is tooth paste that can help maintain it.
Stress can effact youu digestive system by causing your esophagus to go into spasms. Increasing the acid in your stomach, which results in indigestion, making you feel nauseous.
NO it is not enough, 3B=$1, dozen=12 therefor 12*2=24, 24/3=8, 8+2$(soda))=10+0.60= $10.60
We need more background information to help.
You can set it up by dividing teams by just using numbers for example if there are two teams just alternate between 1 and 2. It really just comes down to being equal only do for one what you will do for all.
