Plant2: Cluster of flower sticking out:
http://img21.imageshack.us/i/sany0009lhf.jpg/

Plant3: Yellow-flowered ground plant
http://img19.imageshack.us/i/sany0002d.jpg/

Thanks, everyone,
I'm so happy with this website!
I try to ID as much as I get ID'd, but the only ones that I can ID, people usually beat me to! haha
Now I'm starting summer school, so I won't get to hike as much :(

#2 might be Polygonum lapathifolium but I'd need to see some leaves.

#3 not sure!