Hand 1: if you don't call you're retarded
what happens when he's betting AK or 99 for value?
do you really think a flush is his ENTIRE value range?

Hand 2: I fold flop because he hit it and we have ace high, he's also committed so we need to hit an ace or a king to take the rest of his stack which is unlikely to happen

Hand 3: I'd bet the turn and check the river the reason being is that his range is draws on the flop/turn so some villains will fire a desperate bluff on the river after they miss and get checked to

as played I call because the raise is so small
he could also have had a straight draw and hit the jack instead
but be prepared to lose most of the time calling this