Former graduated mechanical Engineer have Udacity professional Data Analysis nanodegree , with Professional Skills in Python, Pandas, Numpy, Matplollib , and Jupiter notebook. committed to providing excellent service We are using Excel to do various analyses. We have been using linear regression. Now we want to also do logarithmic (Ln) regressions - (Ln) Natural Log , but we need some help in the conversion mechanics. Current Linear Regression Model is Bi-Variate: (Frequency Rate per $ Sales) x Sales = Frequency Average Price per Unit Total Sales = Frequency x Average Price Existing Model Is Linear Regression. Convert linear regressions to Ln and then display results in both Ln and Actual Dollar terms. We will provide more details to those gurus who respond and seem to have the necessary qualifications. THANK YOU.