*grunch*
1. Checks (even though he's red), the likelyhood of this being checked through is high and you are ahead of nothing at the moment.
2. Bets. As last money in. Fold Equity is high HU.
3. Raise. Good UTG players at 10/20 don't limp with A9, A7, A3. I'd say pair+/orFD. If capped, I call down mildly afraid of 77,33.

EDIT: I didn't pay close enough attention to hand 1 to realise it's HU. In which case I bet.
Hand 2. I'm glad this hand was posted, as this is obviously a leak for me.