Use the description of the parabola to write its equation in vertex form. a parabola with vertex (2, 4); passes through (4,-4)
A. y = 2(x - 2)2 + 4
B. y = -2(x - 2)2 + 4
C. y = 2(x + 2)2 + 4
D. y = -2(x + 2)2 + 4

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?