I'm confused i don't know what to do

1. What percentage of girls in Charlie's class would want a spider for a pet?
Ok, so 5 girls want a spider as a pet, and there are 30 kids in total in the class so 5/30 as a percentage is 56.66666667% so rounded thats 57%

2. What percentage of boys in Charlie's class would not want a spider for a pet?
So, there is 4 boys who dont want a spider as a pet and there are 30 people in the class so 4/30 is 13.33333333% so rounded that 13%

3. Supposed that 100 boys and 100 girls were asked if they would want a spider as a pet. based on the data how many would want a pet spider?
So, there are 17 in total who want a pet spider so 17/100 is 17% would want a pet spider.

Ican't do any of the other stuff, but i can get you started. the answer, i believe, is $2.50.