Which type of organism can be unicellular or multicellular?

The expression 6x2 gives the surface area of a cube, and the expression x3 gives the volume of a cube, where x is the length of one side of the cube. find the surface area and the volume of a cube with a side length of 6m

Ihave trouble finding the nth term of a linear sequence

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5