72m^3 + 80m + 64 factor the common factor out

Every time you drive you will experience a combination of driving conditions and environments.

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

Solve for n? [tex]z = \frac{3}{4} mn[/tex]