Subtract these polynomials

What is the least common multiple of 16 and 3?

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !