Astore uses the expression –2p + 50 to model the number of backpacks it sells per day, where the price, p, can be anywhere from $9 to $15. which price gives the store the maximum amount of revenue, and what is the maximum revenue?
(revenue = price x number of backpacks.)

a. $9.00 per backpack gives the maximum revenue; the maximum revenue is $32.00.
b. $12.00 per backpack gives the maximum revenue; the maximum revenue is $312.00.
c. $12.50 per backpack gives the maximum revenue; the maximum revenue is $312.50.
d. $15.00 per backpack gives the maximum revenue; the maximum revenue is $20.00.

Missouri has a shape that is similar to a trapezoid with bases of about 198 miles and 276 miles and a height of about 270 miles. what is the area of missouri in square miles? explain how you found the answer.

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

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?