# Chapter 10 Counting Methods and Probability - 10.3 Define and Use Probability - 10.3 Exercises - Mixed Review - Page 704: 53

9

#### Work Step by Step

For a logarithmic expression, we know the following: $$log_{b}\ y=x \Rightarrow b^x=y$$ Using this, we find that the expression becomes: $$2^{x}=512 \\ x=9$$

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