NEED HELP NOW Which is the equation of a hyperbola with directrices at y = ±2 and foci at (0, 4) and (0, −4)?

A.) x squared over 8 minus y squared over 16 equals 1
B.) y squared over 16 minus x squared over 8 equals 1
C.) x squared over 8 minus y squared over 8 equals 1
D.) y squared over 8 minus x squared over 8 equals 1

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below.the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.

The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?

On #16 : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.