Question

Solve for $x:{\log }_{x}125=3$?

• A. $5$
• B. $41.7$
• C. $122$
• D. $128$
• E. $375$

Answer 1

The correct option is A $5$

• ${\log }_{x}125={\log }_x{5}^3=3{\log }_{x}5=3$ , so we get ${\log }_{x}5=1$ , which implies
  
• $x=5$