Please help me if you do i will give you all stars and a like on your answer! :)

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

Ineed i been stuck on this question since yesterday

Using elimination, what is -4x+2y=-12 4x+8y=-24