D Determine which $x$-value below is a solution of the equation $\log _ { 7 } \left( \frac { 5 } { 3 } x \right) = 3$. $x = \frac { 21 } { 125 } , x = \frac { 1029 } { 5 } , x = \frac { 189 } { 5 } , x = 21 , x = 15$
A) $x = \frac { 21 } { 125 }$
B) $x = \frac { 1029 } { 5 }$
C) $x = \frac { 189 } { 5 }$
D) $x = 21$
E) $x = 15$

Question

Quizplus · Accepted Answer

To solve the equation $\log_7\left(\frac{5}{3}x\right) = 3$, we first convert the logarithmic equation to its exponential form: $7^3 = \frac{5}{3}x$. Solving for $x$, we get $x = \frac{7^3 \cdot 3}{5} = \frac{343 \cdot 3}{5} = \frac{1029}{5}$.

D Determine Which xxx -Value Below Is a Solution of the Equation

D Determine Which $x$ -Value Below Is a Solution of the Equation