How do you solve for x in y=(0.8)(0.84)^x? Precalculus Solving Exponential and Logarithmic Equations Logarithmic Models 1 Answer Bdub Apr 21, 2016 x=(ln(y/0.8))/ln(0.84) Explanation: y/0.8 =(0.84)^x ln(y/0.8)=ln(0.84)^x ln(y/0.8)=x ln(0.84) (ln(y/0.8))/ln(0.84) =x 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 1607 views around the world You can reuse this answer Creative Commons License