a A local pizza shop has a membership program for frequent buyers. The membership costs $25 per month and members get a discounted price of $1.75 per slice of pizza. Isaac purchased a membership to this pizza shop. How much would Isaac have to pay the pizza shop if he bought 5 slices of pizza this month? What would be the monthly cost for x slices of pizza?

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?