How to compute the doubling time and half-life of exponential functions and to use doubling time and half-life to compute future population amounts. Check that the growth rate is small enough for this method. Most people find this more intuitive than the decimal.
Most people find this more intuitive than the decimal.
Consider fitting a line linear regression to transformed data. Doubling time is a concept used for quantities that grow. To do this we divide 70 by the growth rate r. Growth rate r must be entered as a percentage and not a decimal fraction.