To start her collection, Nicole's grandmother gave her a bag of bottle caps. Every month, Nicole adds an additional set amount to her collection. The number of bottle caps, y, and x months is
modeled by the equation shown below.
y = 150 + 12.2
What does the number 150 represent in this equation?
the number of bottle caps in the bag she received
B the number of bottle caps Nicole added each month
the number of months Nicole collected bottle caps
the price of the bottle caps Nicole added

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?