At Chick-Fil-A, two chicken sandwiches and three orders of fries cost $14.80. The cost for three chicken sandwiches and five orders of fries is $23.40. a. What are the equations that represent the situation?

b. How much does each sandwich cost?

c. How much does each order of fries cost?

Please provide an answer for each part and justify each step.

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?