Tracy bought 3 tickets for a day tour trip to a city. the price of each ticket was the same. after she bought the tickets, her account balance showed a change of −$95.31. what would have been the change to tracy's account balance had she bought only 1 ticket for the day tour trip?

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? probability distribution px(x) 6 hours 7 hours 8 hours 9 hours 10 hours 0.62 0.78 пол