An electronics retailer offers an optional protection plan for a mobile phone it sells. Customers can choose to buy the protection plan for $100, and in case of an accident, the customer pays a $50 deductible and
the retailer will cover the rest of the cost of that repair. The typical cost to the retailer is $200 per repair,
and the plan covers a maximum of 3 repairs.
Let X be the number of repairs a randomly chosen customer uses under the protection plan, and let F be
the retailer's profit from one of these protection plans. Based on data from all of its customers, here are the
probability distributions of X and F:

What is the frequency of the sinusoidal graph?

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.