Which is the standard form of the equation of a parabola with a focus of (8,0) and directrix x = -8?
(a)y2= -8x
(b)y2= 8x
(c)y2 = 32x
(d)y2 = 32x

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9