Jeff began deriving the quadratic formula.

ax² + bx + c = 0

x2+bax+ca=0

What step should Jeff do next?

Add b2a to each side.

Take the square root of each side.

Subtract ca from both sides.

Subtract x² from each side.

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.