someone please help me answer those two questions and explain please. thank you

1. (5 pts) Cards are labeled $3, $7, $10 and $ 15. A player pays FF and draws two cards are drawn at random. Find the probability distribution function and the cumulative distribution function for the winnings. 2. (5 pts) Four bags have white and black bails. Bagl has 4 white and 6 black. Bag2 has 6 white and 3 black. Bag3 has 5 white and 10 black. Bagtl has 12 white and 3 black. A bag is selected at random and then a ball from the bag is chosen at random. If a black ball is drawn what is the probability that it was from bagtl