You can nest up to 64 levels of functions in a formula in Excel.
hold ctrl and s together at the same time
From within Excel, File Menu>Save As>Save As Type>CSV
You can open a 2007 Excel spreadsheet with Excel 2003 if you save the file in Excel 2007 using "Save As" and select the 2003 compatibility mode.
In Excel an equation can be a formula. All formulas in Excel must start with the equals sign. That is what tells Excel it is a formula.
the asterisk is used for what function when building a formula in excel
There is no formula error button in Excel. However, there is an Error Checking button on the Formulas ribbon in the Formula Auditing section in Excel 2007.
The PVIFA formula in excel refers to Present Value Interest Factor of Annuity. This is able to be calculated in an excel document.
In XLS 2003 you can simply turn the "Save AutoRecovery info" in EXCEL (Tools/Options/Save)
On Windows, press Ctrl - S at the same time On a Mac, press Command - S at the same time
Replicating means copying. So replicating a formula in Excel is copying a formula. This is a very common activity that is done in Excel. You create one formula and then use it in other places on the worksheet.