Hold'em table

Queen-high on the button in a 3-handed game is a standard open; raising to 300 applies pressure and lets me take the pot with position postflop.

54o is weak out of position facing a raise and a live BB behind; not worth defending.

J7 offsuit is too weak to defend out of position against a 3x button open after the small blind folds.

K9o on the button 3-handed is a solid steal/raise hand; raising to 250 applies pressure to both blinds while building the pot with a decent holding.

45 offsuit is too weak to continue out of position against a button raise, so folding is the highest-EV option.

AK offsuit is a premium hand; 3-betting the button opener builds the pot, isolates heads-up, and lets me win it pre or post with position-neutral pressure.

K9o facing a 3-bet to 800 after my open is weak; folding avoids committing more chips with a marginal hand out of position postflop.

45s is suited and connected, so a small button open is better than folding or limping in a three-handed pot.

Queen-three offsuit is far too weak to defend against a 2.5x button raise out of position, even at a cheap price. Folding preserves chips for better spots.

K5 offsuit facing a raise is too weak to continue for extra chips; folding preserves stack.

Nine-three suited is far too weak to play even from the button in a three-handed pot; calling 100 into 150 with a dominated, easily out-flopped hand is -EV. Folding preserves chips for better spots.

With button folded, it's effectively heads-up; K8o is playable and a modest raise applies pressure on the BB while limiting predictability.

Q7o is too weak to continue against a 2.5bb small-blind raise; it is dominated too often and does not have enough playability to justify the call.

Button position with a suited king; raising to apply pressure on the blinds and take advantage of position with a decent hand.

K6o is too weak to call a button raise out of position from the small blind, and it is a poor three-bet bluff. Folding preserves chips.

76s is playable from the button in three-handed; a small open uses position and folds out some dominated hands rather than flat-calling.

Ace-jack offsuit is strong in 3-max; I 3-bet from the SB for value and to isolate the button's 2.5x open, keeping fold equity if he folds or calls.

Facing a 3-bet to 800 with weak Q4o out of position; folding is standard given the poor hand strength and cost to continue.

76s is too weak to continue against an 8bb small-blind 3-bet; calling is speculative and a 4-bet bluff has poor blockers.