What numbers do you multiply to get -8

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

Which graph represents the linear function below? y-3=1/2(x+2)