Daily, there is always something new to be learning in the science world.
I'm not completely sure but this is what I would do.
evaluate <span>(1/ 4)^x - 1 </span>as is. But change the (1 /2)^2x to (2/4)^2x. This way both fractions have the same denominator and in this sense, the same base. The 2/4 base still evaluates into 1/2 so nothing, mathematically, is being broken here.
36 customers/30 days = 1.2 customers per day
30 days / 36 customers = 5/6 day per customer
