It appears that after n years, you will have tex2html_wrap_inline188 dollars. In other words, at the end of each year your balance from the previous year is multiplied by (1 + R). This makes sense, since you retain your original balance and obtain a factor of R more. Notice that this formula works even for n = 0 (i.e., before any time has passed), at which point you have P dollars.

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Joseph L. Zachary
Hamlet Project
Department of Computer Science
University of Utah