If the perimeter of the following triangle is 7x-2 what s the length of the unknown side
3x
3x - 4
4
3x + 4

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.

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

Ineed to know the answer to this algebra question.