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hank is throwing a surprise party. the party costs $20 per person. create an equation and graph to represent the relationship between the cost of the party and the number of friends attending.

complete the following table:

number of friends (f) 5 10 15 20
cost of party (c) 100 200 300 400

plots the points from the table onto the graph.

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?

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b. false

Math question.. plz me .. best answer all