How do you evaluate the expression log_5 5^7? Precalculus Properties of Logarithmic Functions Logarithm-- Inverse of an Exponential Function 1 Answer Aditya Banerjee. Oct 29, 2016 Answer is 7, Explanation: log_5 5^7 = 7 log_5 5 = 7* log5/log5 =7. (answer). Answer link Related questions What is a logarithm? What are common mistakes students make with logarithms? How can a logarithmic equation be solved by graphing? How can I calculate a logarithm without a calculator? How can logarithms be used to solve exponential equations? How do logarithmic functions work? What is the logarithm of a negative number? What is the logarithm of zero? How do I find the logarithm log_(1/4) 1/64? How do I find the logarithm log_(2/3)(8/27)? See all questions in Logarithm-- Inverse of an Exponential Function Impact of this question 3675 views around the world You can reuse this answer Creative Commons License