Marina is heating a solution in her chemistry lab. The temperature of the solution starts at 20°C. She turns on the burner and finds that the solution's
temperature increases by 3°C every minute. This graph shows the
temperature change.

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

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?