Gabriella left the hardware store traveling toward the dump three hours before willie. willie traveled in the opposite direction going 45 mph faster than gabriella for three hours after which time they were 315 mi. apart. what was gabriella's speed? show all work

Evaluate the expression. (9 + 5)(3 + 2)0

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

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?