Question

rewrite $3^4 = 81$ in logarithmic form.$log_{3}4 = 81$$log_{81}3 = 4$$log_{3}81 = 4$$log_{4}81 = 3$

Explanation:

Step1: Recall log-exponential conversion rule

For $b^y = x$, $\log_b x = y$

Step2: Match values to the rule

Here, $b=3$, $y=4$, $x=81$

Step3: Substitute into logarithmic form

$\log_3 81 = 4$

Answer:

C. $\log_3 81 = 4$