Two rival dry cleaners both advertise their prices. store a's prices are modeled by the expression 8 x-2, where x is the number of items brought in. store b's prices are modeled by the expression 2(4x+1), where x is the number of items brought in. when do the two stores charge the same rate?

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.