Answer:
1 time
Step-by-step explanation:
Lousia's saving changes by -$59 each time she goes to bowling, which means if she has gone to bowling at least twice, then her saving would go down to,
-$59*2= -$118
but since her total expenses in the summer was only -$99, it is clear that she went to bowling only once, which means she spent $59 in bowling and rest $40 in other stuffs.
