Please help I don’t get how to do it.

Which of the following is true for the relation f(x)=2x^2+1

How do you determine whether a relationship represented as as graph is linear or nonlinear

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