Respuesta :
Answer:
38
Step-by-step explanation:
I believe the answer would be 38 i'm not 100% sure but here is why i think so. If Beth sold half of her comic books and then bought nine more that would mean ahe had 19 before she bought the other 9 so 19x2 which is 38 so she began with 38 then sold half which is 19 and then bought 9 more to now have 28.
