I figured he didn't have the flush. And it was a callable bet. But question is, should I have bet it out first? Or maybe raised? Should I have folded?

*********** # 9 **************
PokerStars Game #623878213: Tournament #2387744, Hold'em No Limit - Level I (10/20) - 2004/08/17 -
23:46:18 (ET)
Table '2387744 1' Seat #9 is the button
Seat 3: Tommy Bones (1480 in chips)
Seat 4: C5 GUY (2140 in chips)
Seat 6: Up2Late21 (1320 in chips)
Seat 7: MonsterXXX (1140 in chips)
Seat 1: bigboys815 (980 in chips)
Seat 2: jujubeast (1450 in chips)
Seat 8: FLOPARTIST (1730 in chips)
Seat 9: Bmannio (3260 in chips)
bigboys815: posts small blind 10
jujubeast: posts big blind 20
*** HOLE CARDS ***
Dealt to jujubeast [4s 9s]
Tommy Bones: folds
C5 GUY: folds
Up2Late21: folds
MonsterXXX: calls 20
FLOPARTIST: folds
Bmannio: folds
bigboys815: calls 10
jujubeast: checks
*** FLOP *** [9c Kc 8c]
bigboys815: checks
jujubeast: checks
Bmannio said, "i havent seen one yet on this sit"
MonsterXXX: checks
*** TURN *** [9c Kc 8c] [Ac]
bigboys815: checks
jujubeast: checks
Up2Late21 said, "damn"
MonsterXXX: checks
*** RIVER *** [9c Kc 8c Ac] [9h]
bigboys815: checks
jujubeast: checks
Bmannio said, "site i mean"
MonsterXXX: bets 80
bigboys815: folds
jujubeast: calls 80
*** SHOW DOWN ***
MonsterXXX: shows [As Qh] (two pair, Aces and Nines)
jujubeast: shows [4s 9s] (three of a kind, Nines)
jujubeast collected 220 from pot
Up2Late21 said, "no on had the flush"
*** SUMMARY ***
Total pot 220 | Rake 0
Board [9c Kc 8c Ac 9h]
Seat 3: Tommy Bones folded before Flop (didn't bet)
Seat 4: C5 GUY folded before Flop (didn't bet)
Seat 6: Up2Late21 folded before Flop (didn't bet)
Seat 7: MonsterXXX showed [As Qh] and lost with two pair, Aces and Nines
Seat 1: bigboys815 (small blind) folded on the River
Seat 2: jujubeast (big blind) showed [4s 9s] and won (220) with three of a kind, Nines
Seat 8: FLOPARTIST folded before Flop (didn't bet)
Seat 9: Bmannio (button) folded before Flop (didn't bet)