What is the sum of -2x^2-5x+3 and 4x^2+4x-6

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

Graph the equation. select integers for x

Which equation can be used to determine the reference angle, r, if 0=7 pi/12?