What are the coordinates of the vertex of the parabola with the equation y = x2 + 2x – 3?

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.

Construct the graph that models the given situation

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?