The relationship between the selling price of an item and the cost of an item has been determined to be q=-20s+400 has been dete
rmined by a marketing firm, where q is the quantity sold in a year and s is the selling price. If the cost to produce the item is $12, what is the selling price that optimizes the year yearly profit?
the line segment from a vertex to the midpoint of the opposite side. It is also an angle bisector when the vertex is an angle in an equilateral triangle or the non-congruent angle of an isoceles triangle.
