Help and explain please

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

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Which representation has a constant of variation of -2.5