Was given a list of exponential equations which I could solve fairly easily with other methods, but when I checked the key I don't understand the method used.
For example: in the equation 3^2x=81, the explanation for the solution of x = 2 was written as 2x log(3 /(2 log(3) = log81 /(2 log(3) with no other explanation.
As far as I understand, 3^2x = 81 in log form is 2x= log(3 81, and I can't figure out how that was translated into the explanation given by the key. What steps am I missing?
For example: in the equation 3^2x=81, the explanation for the solution of x = 2 was written as 2x log(3 /(2 log(3) = log81 /(2 log(3) with no other explanation.
As far as I understand, 3^2x = 81 in log form is 2x= log(3 81, and I can't figure out how that was translated into the explanation given by the key. What steps am I missing?