HELP PLZ

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Which of the following expressions is equal to 2x^2+8

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.