How do you evaluate #log_3 18#? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer Noah G May 19, 2016 #= log_3(9 xx 2)# #= log_3(9) + log_3(2)# #= log9/log3 + log2/log3# #= log3^2/log3 + log2/log3# #= 2cancel(log3)/cancel(log3) + log2/log3# #= 2 + log_3(2)# Hopefully this helps! Answer link Related questions What is the common logarithm of 10? How do I find the common logarithm of a number? What is a common logarithm or common log? What are common mistakes students make with common log? How do I find the common logarithm of 589,000? How do I find the number whose common logarithm is 2.6025? What is the common logarithm of 54.29? What is the value of the common logarithm log 10,000? What is #log_10 10#? How do I work in #log_10# in Excel? See all questions in Common Logs Impact of this question 1913 views around the world You can reuse this answer Creative Commons License