Is D. r = r . d a identity property of multiplication

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

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?