How do you simplify #log_9 7x + log_9 x + log_9 5x#? Precalculus Properties of Logarithmic Functions Functions with Base b 1 Answer Adrian D. Jul 26, 2015 #log_9 35x^3# Explanation: Note that #log_ka+log_kb=log_kab#, we therefore have: #log_97x+log_9x+log_95x=log_9 35x^3# Answer link Related questions What is the exponential form of #log_b 35=3#? What is the product rule of logarithms? What is the quotient rule of logarithms? What is the exponent rule of logarithms? What is #log_b 1#? What are some identity rules for logarithms? What is #log_b b^x#? What is the reciprocal of #log_b a#? What does a logarithmic function look like? How do I graph logarithmic functions on a TI-84? See all questions in Functions with Base b Impact of this question 1716 views around the world You can reuse this answer Creative Commons License