been stuck on this for a while!!

Volume: Option A - Around 85.33 (in^3)

Step-by-step explanation:

Let us take a look at the problem. Here we are given the circumference of the bowling ball, provided it is in the shape of a sphere.

Our first step can be to note the formula of circumference, applicable to both a sphere and a circle:

C = 2 * π * r  - Where r = radius

Now let us substitute the known value of the circumference as to solve for r, or the radius:

(8π) = 2πr

r = 8π/2π

r = 4

Now take a look at the spherical formula for volume of a sphere:

V = 4/3 * π * r^3 - Where r is yet again the radius

Let us substitute the known value of the radius as to solve for the volume, or in other words to solve for the

V = 4/3 * π * (4)^3

V = 4/3 * π * 64

V = 256/3 * π

V = (Around) 85.33π (in)^3

*Don't forget the units

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18