Initially, there were equal amount of roses and tulips at a store. each bouquet was made with 3 roses and 4 tulips. after the bouquets were all made, there were 30 roses and 18 tulips left in the store. how many bouquets were made?

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.