What actions to you take given the following situations? I know there's a time and place for every action but in general give me some insight here.

1.) You are EP in an unraised pot - loose passive table - standard raises are called in 3 spots.
a.) You get an A on the flop with A72 rainbow.
b.) You miss the flop but are first to act.

2). You are LP and have 3 limpers to you.
a.) You get an A on the flop with A72 rainbow - one player bets the pot.
b.) You miss the flop but are checked to.

3.) There are a few limpers and an aggresive player makes it 4xBB to go.
4.) 4 limpers to you in SB.
5.) There is a LP raise and you have AK in BB.

AK is a loser for me and I would like to improve my play with it... hopefully some of these questions can help me learn where the profit is going.

Question for scenarios 1 and 2: did you raise AK preflop? It looks like no. Why not?
Or did you make a standard raise and get called?

1.a I like to limp in EP with AK and see what happens, especially vs a loose table, this of course could gte me in trouble as AK is tough to play in a 6 handed pot unless yout hit a huge flop.
b. If you miss the flop, I check and am prepared to fold.

2. Late position with 3 limpers is when I raise with AK, I really dont want to play this 4 way, to many people playing Ax that if I hit my ace I'm not sure if its good of not.
a. Depending on the player and what I saw from him on the flop I almost always raise here. I doubt he flopped a set, if he did why would be bet into the raiser with an A on the flop, my guess is that bet is to find out where he is at. I raise and see his reaction.
b. Again I fold, unless I think I can push the guy off his hand.

3. I will call here depending on my read on this player, I have position on him in this hand which I like, the only thing that worries me is AA or KK but the chances are low of the case card hitting. I can usually tell from the way he bets the flop if he has the big pair.

4. 4 limpers to me in the SB, I raise here. I am willing to see a flop but most likely I have the best hand now and I am willing to take it down since I have to play the rest of the hand out of position.

5. Depends on how much the raise is and my read on the player, again in the BB I have to play this out of position the whole time. This is about 50/50 if I think I can push the raiser out with a reraise I will do it but most likely I just call and see a flop.