If strep bacteria causes the infection, it can remain contagious for up to 2 weeks without treatment. However, antibiotics can shorten the contagious period and li â¦ mits to about 24 to 48 hours once the therapy starts.     http://health.top54u.com/post/How-Long-is-Tonsillitis-Contagious.aspx.
Calculate Options Implied Volatility in Excel. Implied Volatility Function: Returns the annualized volatility of an underlying security implied by the market price of a European call or put option on that security, based on Black-Scholes valuation. Description of parameters.
Future Value of a Lump Sum Investment Using a Spreadsheet. Spreadsheets, such as Microsoft Excel, are well-suited for calculating time value of money problems. The function that we use for future value of an investment or a lump sum on an Excel spreadsheet is: =FV(0.05,1,0,-100,0) To use the function in the worksheet, click on Formulas in the title bar, then click on Financial.. You will then see a list of functions.