Pleasee help thx in advance!

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.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Wrote and expression for the difference of p and 4