The parabola has focus (–8, 0) and vertex at the origin

  x = -1/32y^2

Step-by-step explanation:

Since the focus is to the left of the vertex at a distance of 8 units, the equation can be written as ...

  x -h = 1/(4p)(y -k)^2 . . . . with vertex-focus distance of p and vertex (h, k)

  x = -1/32y^2

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64