Use Properties of Logarithms to Evaluate the Expression $\mathrm { f } ( \mathrm { x } ) = \log 7 x$

question 149

Multiple Choice

Use properties of logarithms to evaluate the expression.
-If $\mathrm { f } ( \mathrm { x } ) = \log 7 x$ , find $f \left( 7 ^ { 8 } \right)$

• A) 8
• B) \(\log 8 x\)
• C) 7
• D) 56

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