Lonnie has saved 80% of the money she needs to buy a new video game if she has saved$36 how much does the video game cost​

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

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?

Find the maximum value of p= 4x + 5y subject to the following constraints :