Please someone answer fast

The Mayapredicted the end of the world on December 21,2012

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

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?