1/3 Sevens in the small blind

No. 3b next to the raiser is super strong (if he know what he is doing). Cold calling you are going to face a potential 4bet. Best case scenario you are in a 3 way pot to set mine on 9-1. Meanwhile you have someone that is uncapped and has tons of better pp in their range. Just fold unless you know +1 is FOS.

It would be acceptable if tight to fold without the 3b from +1. (Zero-EV mix in equilibrium with standard sizing, a total LLSNL unknown is opening way wider but the larger size is an incentive to play tighter.)

Facing a 3b it's not even close.

Probably you would have hit a set and stacked AA/KK. You don't really have odds. Maybe if UTG flats, but it is bad for you if UTG folds and worse if he 3!s.

I folded
+1 / 3Bettor had KcKh

I would have flopped a set & rivered quads

EZ fold

Calling would be a big leak.

I wouldn't even think twice about this one, trivial fold for me. The action is still open and we're facing an EP 3bet and not remotely deep enough to setmine (let alone OOP).

The more interesting question is what hands should be consider continuing with in this spot. My guess is that is should be a very small range.

GcluelessNLnoobG

Very easy fold.

Snap fold with anything up to TT. JJ may also be a fold depending on the opponents, in a vacuum it's probably a fold as well.

There are some spots where you can call or cold call a 3! with a pp. There was one case I remember where an OMC made a small 3!, and it was likely he had a big pp. Then it was hugely profitable to call with a small pp 4-ways, knowing you could likely stack him if you hit or win a big pot from someone if he wasn't as strong as it looked.

However, many times low stakes players call 3!s with pp getting incorrect odds, not closing the action, etc. 3!s are usually strong at low stakes and it is a fish play to cold call with AQ / suited broadway, etc.