2. A bank charges a $10 fee to open an account. Which of the following equations best represents the total amount in the account, m, when starting with d, dollars? A. m = d + 10
B. m = d -10
C. m –10 = d
D. m + d = 10
PLEASE HELP A. S.A. P

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?