Yael used to have a square garage with 228 ft2 of floor space. She recently built an addition to it. The garage is still a square, but now it has 50% more floor space. What was the
length of one side of the garage originally? What is the length of one side of the garage now? What
was the percent increase in the length of one side?

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?