Six times the sum of a number and 3 equals 2

Which problem could be  solved  by evaluating the expression  7×(−3)7×-3?

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.

This is so hard and it’s for a test