Hold'em table

3c-Kh is a weak hand (low kicker with king) facing a bet that requires calling 100 chips. In early position with a modest stack, folding is prudent to avoid playing marginal hands out of position against two opponents.

J2 suited is too weak to defend from the small blind against the big blind at this stack depth.

6-3 offsuit is a very weak button opening hand in a three-handed game and is best folded rather than investing chips.

AJ suited is a strong hand heads-up against the big blind after the button folded; raising builds the pot and takes initiative.

4d-As is a weak hand (one pair or ace-high potential), and facing a 3x raise from small blind in a 3-handed game is not favorable. Folding preserves chips with marginal holdings.

J8 offsuit on the button facing a raise-limped pot isn't strong enough to invest; fold to preserve chips for better spots.

As is a strong hand with good ace-kicker potential. Raising to 300 (3x the big blind) from the small blind after the button folds applies pressure to the big blind and builds the pot with a premium hand. The raise is appropriately sized for position and hand strength.

Defend the big blind with suited JTs against the small blind's min-raise; it has strong playability heads-up and favorable pot odds.

I'm out of position in a 2-player pot with A-6 offsuit on a 3-8-4 flop. My hand is weak with only ace-high and minimal equity. Checking allows me to see the next card cheaply and evaluate further, rather than risk committing more chips with a marginal holding.

Villain's flop check caps much of their range on this low board. A half-pot stab can fold out unpaired overcards while retaining equity with two overcards and a backdoor club draw.

I have 6s-As (weak ace with six kicker) on a 3d-8c-4s board. After raising preflop and checking the flop, my opponent bet 300 into a 600 pot. My hand lacks strong equity against a likely stronger range, and folding minimizes losses in this unfavorable spot.

Ad-Jc is a strong hand in 3-handed play with premium high card and broadway potential. Raising to 300 (3bb) takes control of the pot and builds it with a value hand while still keeping reasonable pot odds. This position and hand strength justify a standard raise.

J5 offsuit is too weak to defend from the small blind versus a button 3x open, especially with the big blind still behind.

3-8 offsuit is a weak hand facing a raise; folding is correct here.

2-5 offsuit is too weak to profitably enter facing the big blind from the button.

A8 suited-ish offsuit ace is strong heads-up vs only the BB left; raise for value since button folded.

K2 offsuit is a weak hand not worth playing from the button facing a raise; folding preserves chips.

9-4 offsuit is a weak hand with poor playability. I'm out of position (small blind) facing a big blind raise, and the cost-to-reward ratio is unfavorable even though I've already invested 50 chips.