A test has 2 multiple choice questions, each with five choices. What is the probability of guessing the correct answer to both questions?

Me answer number 3plz explain how you do it

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

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.