How do write y×2×1 in its simplest form​

Restrictions on f(x) = 1/x+5 and g(x) = x-2

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

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form