This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.

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Here's the solution for question 3. b):
Step 1: Use the logarithm property for division. The property states that . Applying this to the expression :
Step 2: Substitute the given value and evaluate the known logarithm. We are given that . Also, , so . Substitute these values into the equation: The value of is .
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Here's the solution for question 3. b): 3.
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.