What type of circuit is illustrated in the diagram?

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.

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Evaluate the expression for the given value of the variable 7a - 4a for a =8