Which of the following equations has an axis of symmetry with the equation x = 3? a. y = x squared + 6 x minus 3 c. y = 2 x squared + 6 x minus 3 b. y = x squared minus 6 x + 3 d. y = 3 x squared + 6 x minus 3

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