Algebra-2

Question Analysis
This problem tests the student's understanding of the change of base formula and the ability to apply it to express a logarithm in terms of natural logarithms.

Key Concept Explanation
The change of base formula is given by: ( ). In this case, we are converting from base 7 to the natural logarithm (base ).

Step-by-step Solution
1. Use the change of base formula to express

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