Explain why the area of a square can be written as A=s2 , where s is the length of a side. Provide three to five sentences. Please help.

20 pts !!

What is the multiple zero and multiplicity of f(x) = (x ? 3)(x ? 3)(x + 5)? multiple zero is 3; multiplicity is 2 multiple zero is 5; multiplicity is 1 multiple zero is ? 5; multiplicity is 1 multiple zero is ? 3; multiplicity is 2

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

21 a stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. how long are the two pieces?