The degree of the polynomial function f(x) is 4 the roots of the equation f(x)=0 are -8 -5 1 and 2 which graph could be the graph of f(x)

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