19. Helen has 2 more than twice as many stamps as Gail. If Gail buys 10 more stamps, she and Helen will have the same
number of stamps. How many stamps does each person have
now?

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.