The usual 100NL fishing hole

MP has $60
I cover.

My opponent is loose, likes to limp and will fold to post-flop aggression. On the last hand I iso-raised and won with a c-bet with a couple cards. Table is a mix of Tight, semi-tight and loose passive.

MP limps
I raise to $4 with A 9
folds around
MP re-raises to $9
I call

$19 in the pot, heads-up to the flop.
5 7 8
MP bets $10, I call

$39 in the pot, heads-up to the turn
9
MP bets $20, I put the rest in...