The student council has decided to sell t-shirts for a fundraiser. the printing company charges a $75 set-up fee plus $3 per shirt. the student council plans to sell their t-shirts for $12 per shirt. write a function p(t) to represent the student council's profits.

Solve the system of equations. y= 2x y= x^2 - 15

Which graph represents the equation y =4x

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?