## College Algebra (6th Edition)

Apply the Basic Logarithmic Property: $b^{\log_{b}x}=x$ and the fact that $\log x=\log_{10}x$ (common logarithm has base 10)$:$ $10^{\mathrm{l}\mathrm{o}\mathrm{g}13}=10^{\mathrm{l}\mathrm{o}\mathrm{g}_{10}13}=13$