Probability Exam

Please answer the following question with the correct answers and calculations and theory. Thanks

A florist has 100 customers a day, who buy some combination of roses and gift cards, with the number of customers given by the following table: 1 rose 6 roses 1 gift card 2 gift cards 3 gift cards 12 roses 10 13 40 20 7 1 1 What is the marginal PMF of gift cards bought? Roses bought? What is the expected number of gift cards sold per customer? What is the expected number of gift cards sold per day? What is the expected number of roses sold per customer? What is the expected number of roses sold per day? Are the two PMF's independent