Anxiety Disorder Statistics. Anxiety Disorders affect 18.1 percent of adults in the United States (approximately 40 million adults between the ages of 18 to 54).
Perfect square. Perfect square is an element of algebraic structure which is equal to the square of another element. Square number, a perfect square integer.
The firms produce the same product for the same price. perfect competition. sometimes called pure competition, is the simplest market structure because a large number of firms produce basically the same product at the same price, restricting the decisions and influence they have on the market.