How do you solve #40 = 20(1.012)^x#? Precalculus Solving Exponential and Logarithmic Equations Logarithmic Models 1 Answer Harish Chandra Rajpoot Jul 3, 2018 #x=log2/\log1.012=58.10814961730409# Explanation: Given that #40=20(1.012)^x# #(1.012)^x=40/20# #(1.012)^x=2# Taking logarithms on both the sides as follows #log(1.012)^x=\log2# #x\log1.012=log2# #x=\log2/log1.012# #=58.10814961730409# Answer link Related questions What is a logarithmic model? How do I use a logarithmic model to solve applications? What is the advantage of a logarithmic model? How does the Richter scale measure magnitude? What is the range of the Richter scale? How do you solve #9^(x-4)=81#? How do you solve #logx+log(x+15)=2#? How do you solve the equation #2 log4(x + 7)-log4(16) = 2#? How do you solve #2 log x^4 = 16#? How do you solve #2+log_3(2x+5)-log_3x=4#? See all questions in Logarithmic Models Impact of this question 2591 views around the world You can reuse this answer Creative Commons License