graphs,tables and spread sheet are the three examples of models
free spread sheet software is open office,just type in google open office download
there is 250 rows in a spread sheet
i downt no what a spread sheet model is so i can not answer this question.i am terribly sorry.
A spread sheet is good for complicated equations, such as if statements and absolute cell reference.
a banker would use a spread sheet for calculations relating to money
There are a great many number of features that can be found on a spread sheet. These features include math functions.
A spread sheet
Some components of a spread sheet include the cells and columns. Functions are another important aspect to spread sheets because they allow you to compute.
VisiCalc
they write on it
FFS