villain is 9/4/1 over 450 hands

i know, standard muck pf, yadi yada

PokerStars No-Limit Hold'em, $1.00 BB (7 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

Hero (UTG) ($153.55)
MP1 ($100)
MP2 ($20)
CO ($62.35)
Button ($226)
SB ($20.50)
BB ($20.75)

Preflop: Hero is UTG with 5, 5
Hero bets $4, MP1 calls $4, 5 folds

Flop: ($9.50) 5, 7, 10 (2 players)
Hero bets $7, MP1 calls $7

Turn: ($23.50) 7 (2 players)
Hero bets $15, MP1 raises to $33.50, Hero?