Aballoon is 300 feet above a cliff. the angle of depression to the cliff edge is 40° 30'. what is the horizontal distance from the balloon to the edge of the cliff? a. 462 feet b. 392 feet c. 351 feet d. 256 feet

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?