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What is the logarithmic function modeled by the following table? x f(x) 9 2 27 3 81 4

How do you use the elimination method for this question? explain, because i really want to understand!

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