Answer the following questions. Which graph shows the inequality that represents this situation with the solution region shaded? Will Rochelle be able to cover her weekly expenses is she works for 5 hours and makes 15 bracelets? , because the point (5,15) lies the solution region.

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

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?