Answer:$ 20
Explanation:
start off with 32 , then you add 8 and you will have 40 . then she went shopping so , she brought 3 $6 books ( 6 , 12 , 18 ) . so far she would have $32 , ( 40 - 18 = 32 . Plus she brought a juice box which was $2 so the answer would be $20 ( 40-18-2 = 20)