Mr. Quilling, the evil twin of mr. Robertson, gives you 36 question test 93 points. Questions are worth either two or three points. How many to point questions are on the test?

A. 21
B. 15
C. 24
D. 12
E. 18

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

What is negative 3/9 times negative 2/8 ?

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?