A truck can be rented from Company A for $140 a day plus 500 per milo. Compory charges a day thus 50 80 por mile to send the same truck. Find the number of miles in a day of which the rental costs for Company A and Company B are the same
Amiters, the rental cents are the same from other company

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?