What is Log Base 9 of 729?

The below is the work with steps to find what is log base 9 of 729 shows how the input values are being used in the log base 9 functions. Formula:
log_b(x) = y, if b^y = x

Input:
x = 729
b = 9

Solution:
y = log₉ 729
= log₉ 9³
= 3 log₉ 9 = 3 x 1
log₉ 729 = 3
log₉(729) = 3