I believe that choice A is the best answer out of those given above.
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Answer:
Exact form: 136/13
Decimal form: 10.46153846
Mixed number form: 10 6/13
Option B:
is the correct answer.
Explanation:
The exponential equation is 
If
, then 
Thus, the equation becomes

Applying log rule,
and thus the equation becomes

Since, we know that,
, using this we get,

Hence, the logarithmic equation which is equivalent to the exponential equation
is 
Thus, Option B is the correct answer.
8.9. round the first 8 after decimal to 9 because the 8 after is 5 or above.