Notation

Symbol	meaning and mnemonic	M& T
P	Principle	P
r	annual interest rate	r
t	number of years, time	t
m	number of compounding periods per year
mt	number of compounding periods in t years
n	number of compounding or payment periods n=mt	M,n
i	Interest rate per compounding period $i= \frac{r}{m}$	k,r
Pn	future value after n periods	Pn,A
R	payment amount made at a regular interval	Y
A	present value of an annuity	V
S	future value of an annuity	S
	Savings plan or Sinking fund	amount