At practice, Joy does twice as many jumping jacks as Bill, and she also does 50 sit-ups. Joy does 112 exercises in total. The equation 2x + 50 = 112 describes this situation. What does the variable x represent?

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