Astoreowner orders 25 calculators that cost $32 each. the storeowner can sell each calculator for 40$ .the storeowner sold 22 calculators to cudtomers. he had to return 3 calculators that were never sold and pay a $2 charge for each returned calculator(although the initial cost is refunded)what is the storeowners profit

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 :

What is the circumference of a circle with an area of 50.24 cm²?