How do i do rotations

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

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?

Jace didn’t pay his previous month’s credit card bill in full. this month’s bill shows a finance charge of $35.13. jeremy calculates the average daily balance in the new bill to be $2,342.15. what is the monthly percentage rate on the card? a. 1.5% b. 1.82% c. 14.9% d. 18.0%