First hand at the table, villain is unknown.

PokerStars No-Limit Hold'em, $1.00 BB (8 handed) http://www.flopturnriver.com/reviews/Online-Poker-PokerStars.php#converter]Poker Stars[/url] Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP1 ($148.65)
MP2 ($102.10)
CO ($198.75)
Button ($137.20)
SB ($69.70)
Hero ($100)
UTG ($104.85)
UTG+1 ($106.95)

Preflop: Hero is BB with 9, K.
3 folds, MP2 calls $1, 1 fold, Button calls $1, 1 fold, Hero checks.

Flop: ($3.50) K, T, 9 (3 players)
Hero bets $3, MP2 folds, Button calls $3.

Turn: ($9.50) 5 (2 players)
Hero bets $7, Button calls $7.

River: ($23.50) 2 (2 players)
Hero ...

Value bet or check/call here?