June bought two posters and three cups. each poster cost $11. june spent a total of $31. let t represent the cost of one cup. which situation is one way to represent this situation?

Find the slope of the line y =8/9x + 1.

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

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?