7. Which equation is represented by the graph?

A. y = −x2 + 2

B. y = 2x2 − 1

C. y = x2 + 2

D. y = −2x2 − 1

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? 0.62 0.78 0.84 0.96