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Moderate

Logarithmic Equations - ${ \log }_{ x }\frac { 1 }{ 8 }$

ACTMAT-3NXEF4

For which of the following values of $x$ does:

$${ \log }_{ x }\frac { 1 }{ 8 } =-\frac { 3 }{ 4 }$$

A

$ -16 $

B

$ -\cfrac { 1 }{ 16 } $

C

$ \cfrac { 1 }{ 16 } $

D

$ 8 $

E

$ 16 $