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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:  

 

 

 

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TESTIMONIALS

These formulas are great, they will help now and in the future.

Todd Freitag Kamiakin Teacher

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