Write the Expression as a Single Logarithm with Coefficient 1 $$a \neq 1 \text { and } b \neq 1$$

Write the expression as a single logarithm with coefficient 1. Assume all variables represent positive real numbers with $$a \neq 1 \text { and } b \neq 1$$
- $$\frac { 3 } { 7 } \log _ { b } 9 y + \frac { 7 } { 5 } \log _ { b } \left( 81 y ^ { 2 } \right)$$

A) $\log _ { b } ( 9113 / 35 y 113 / 35 )$
B) $\log _ { b } ( 729 y 39 / 40 )$
C) $\log _ { b } \left( 729 y ^ { 9 / 10 } \right)$
D) $\log _ { b } ( 939 / 20 y 63 / 40$ )

Correct Answer:

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