Holdem table

64 offsuit is too weak to open from the button even three-handed; folding avoids playing a dominated hand out of position postflop.

J2 offsuit is far too weak to play even from the button in a 3-handed pot; folding preserves chips for better spots.

K6 offsuit heads-up against BB with no fold equity from limping isn't worth defending; folding preserves chips.

KTo is a reasonable button raising hand; a standard 2.5bb open applies pressure on both blinds.

94o is too weak to continue against a button open; calling or raising would be burning chips with a hand that flops poorly.

J4 offsuit is far too weak to defend the big blind against a button raise even at cheap odds, and playing it out of position postflop will lose more than the 150 call saves.

67o is too weak to open from the button into two live blinds; folding avoids playing a dominated hand out of position postflop if called.

Heads-up from the small blind, K7o has solid equity against a random big blind hand. A standard open builds the pot and applies fold equity without risking much.

Q6s is a suited hand with decent playability on the button in 3-handed play; a standard 3x open builds fold equity and can win the blinds outright while keeping postflop play manageable.

9-8 offsuit facing a 3bb button open with a big blind still to act is a weak spot to invest more chips; folding preserves stack.

A3o is too weak and poorly playable to defend out of position against a button open, so folding is the higher-EV choice.

7-4 offsuit is a weak hand not worth playing even on the button; folding preserves chips.

J6o is too weak to continue out of position against the big blind; folding avoids a bloated pot with a poorly playable hand.