Which statement best describes the function below? f(x) = 2x^3+ 2r^2-x
A. It is a many-to-one function.
B. It is a one-to-one function.
C. It is not a function.
O
D. It fails the vertical line test.

You have two cards with a sum of -12 in both hands. a. what two cards could you have? b. you add two more cards to your hand, but the total sum if the cards remains the same, (-12).

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

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?