Hi!

I know that A is an obvious bluff card but still i think i have better hands in my range and i dont need to continue with this. My question is what's the worst hand i should continue with (i know this depends a lot on the range i flat preflop and there's not an exact answer) but i'd like to see a general approach.
Also what's the worse hands that i should flat on the flop? im gonna have AQo AJo ATo , some Axs , Kxs Qxs, should i flat sutff like TT 99 88 77 55, 9x and some Ax?
Poker Stars, $0.10/$0.25 No Limit Hold'em Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.
SB: $25.58 (102.3 bb)
BB: $25.35 (101.4 bb)
UTG: $24.65 (98.6 bb)
MP: $31.66 (126.6 bb)
CO: $26.93 (107.7 bb)
Hero (BTN): $29.68 (118.7 bb)
Preflop: Hero is BTN with 7
7![]()
3 folds, Hero raises to $0.52, SB raises to $2, BB folds, Hero calls $1.48
Flop: ($4.25) 5
2
9
(2 players)
SB bets $2.03, Hero calls $2.03
Turn: ($8.31) A
(2 players)
SB bets $3.97, Hero folds