Identify points of discontinuity and classify the type of each discontinuity

Can someone me with my hwplz(only the circled ones)

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.

The formula for the volume of a right square pyramid is given below, where a is the side length of the base and h is the height.