Ions that take electrons are called

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.

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)