Are these linear functions or nonlinear functions, please help ive only gotten fake answers and im on a timed test i just need help yal.

What is the value of x? enter your answer in the box. (cm)

On a piece of paper, graph . then determine which answer choice matches the graph you drew

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.