In detroit the high temp. is degrees fahrenheit for five days in jan. were 12,-8,3,6,-15. what was the average temperature for the five days

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.

Can someone explain to me how to do

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?