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Kamiakin High School
Financial Algebra/Computer Apps
Formulas
Here is a list of formulas that we will use commonly during this class
I= Interest amount
P= Principal
M= Monthly payments
R= Interest Rate
T= Time in years
Ln= Natural logarithm
N= amount of times compounded annually
Z= Combination of Interest and Principal.
A= amount of times compounded annually
Simple Interest Compounded only one time through the life of the loan/investment.
I=PRT
Compound Interest Annually:
I=P(1+R)T
Multiple Compounded Interest: Daily, Monthly, Weekly, Etc.
Z=P(1+(R/N)TN
Monthly payments based on Purchase price, Interest rate and length of loan
M=p(r/12)(1+(r/12))12t
(1+(r/12))12t -1
Inflation Cross multiply formula
Length of loan formula credit card:
TESTIMONIALS
These formulas are great, they will help now and in the future.
Todd Freitag Kamiakin Teacher
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