A guy wire is attached to a palm tree 50 ft. above the ground to stabilize it. If the guy wire is also attached to the ground 70 ftaway from the base of the tree, how long is the guy wire? (Round your
answer to the nearest foot.)
50 ft
70 ft
A
49 ft
B
78 Ft
С
120 ft
D
86 ft

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?