Here's a few discrete math problems. I just threw them up in photoshop so it looks clean. For those of you who help me out with these, please do your best to explain thoroughly. I'm going to be tested on similar problems on Monday, so i really need to understand the process.

These are the only 3 out of 20 i need help on, so I guess i'm doing alright

http://img256.imageshack.us/img256/1539/math1hz1.jpg

thanks guys