Alfredo is employed on an assembly line. he receives 35 cents for each part that he works on. if he works on more than 150 parts, his employer will pay him 40 cents for each part over 150. yesterday, alfredo worked on 210 parts. how much did he earn?
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The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

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?