The graph of f(x) = x2 − 3x − 28 is shown. which of the following describes all solutions for f(x)?
a). (−4, 0), (0, −28), (7, 0)
b). (−4, 0), (−1, −24), (0, −28), (3, −28), (7, 0)
c). (x, x2 − 3x − 28) for all real numbers
d). (x, y) for all real numbers

How to use order of operation in 20 divide by 4 multiply 5 = 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?

If x+y+z=0 what is the value of [tex] {x}^{3} + {y}^{3} + {z}^{3} [/tex]