Greg is 5 years younger than 3 times the age of his sister

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.

Math it's appreciated. (picture provided)

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?