Flying Home A bird flies from the bottom of a canyon that is 71 4/5 feet below sea level to a nest that is
589 7/10 feet above sea level. What is the difference in elevation between the bottom of the canyon and the bird's nest?

What is (28 + 7 + 6 + 3) x 1/2 show your work

What is the value of -3/4 to the 4th power? -256/81 -81/256 81/256 256/81

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?