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2 Math parts!

And employee salary increased by $4500 which represents a 15% raise what is the rate of the increase

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.

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1