Model compound growth, decay and interest

Press these keys

Walkthrough

1. 1
   Choose multiplier

   For r% growth use 1+r/100; for decay use 1−r/100.

2. 2
   Build model

   Use initial × multiplier^number of periods.

3. 3
   Interpret

   Match periods and rate units, then round money or measurements appropriately.

Worked example