Help! Please The vertices of a quadrilateral are shown.

P(3,7), Q(7,15), R(17,10), S(13,2)

What is the area of the quadrilateral?

A.
50 square units
B.
125 square units
C.
100 square units
D.
80 square units

Sweet t saved 20 percent of the total cost of the green-eyed fleas new album let there be fleas on earth. if the regular price is $30 how much did sweet save

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?

The product of (7x-2) and (20-3x)/4. when x=4