How do i get the median for this question ?

Which of the following tables represents exponential functions?

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

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)