Help me with this please

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.

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25

Graph the following system of linear inequalities. identify at least two points in the solution: y < 5 - 2x | x + 5y > -7