Which is better to use for a kitchen sink - 18 or 20 guage stainless steel?

It's for an office pantry and I'm thinking of using stainless steel but am not sure what guage to specify.

Should I drop out of college ?

You should look at your short term, mid term and long term plans - or create one so you would know what you really want out of life. Then do what you have to do to achieve your goal. The better thing to do is to put in more effort into your studies to be able to finish sooner. Math is just practice. I learned the hard way but am now enjoying the fruit of my efforts.

Where can I buy Russian DVDs online or at a store?

My little brother likes Go Diego Go and The Backyardigans, he asked me to get him dvds of these in Russian. Is there a website or something online which is trustworthy? Or is there a store near the Boston-Lexington area in Massachusetts? Any help would be appreciated.

Stainless steel water bottle safe?

I was drinking my stainless steel water bottle and it tasted weird , when i looked in the bottle it had rust in it is it safe to drink?

Would I be able to survive a "Zombie" Apocalypse?

no you cannot survive. now go hide in a cave until you are told the zombie attack is over and it is safe to come out.

Do you know of any cake decorating classes in my area?

I'm 15 and recently started watching Cake Boss, it looks fun to decorate cakes and pastries so i wanted to give it a go and learn how! Do you know of any classes near Naugatuck, Connecticut? (Waterbury, Beacon Falls, Watertown..) Not too far away like Danbury or Hartford! Thank you! (:

Unmanned Underwater Vehicles?

I strongly believe you need to really educate yourself on the limitations of sonar both for location and for data transfer. I believe you will have to use inertial navigation after bringing the unit to the surface for GPS and other methods of setting base points and for communication via satellite of data and direction commands. Sonar can be used for floor surveys but little else as you propose.