The cost of all cell phone bill (c) increases when the number of text messages (t) increases. write the correct equation for this scenario, and solve for the cost when the number of texts is 4. texts 5 costs 2 texts 10 costs 4—— answers: a) c= 10/t; c=20 b) c=10/t; c=5 c) c=.8t; c=16 d) c=.4t; c=1.6

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

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?

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6