Please help and I would really appreciate if the answer is correct

Will give brainliest what is the value of x? enter your answer in the box.

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

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.