What is the cpi of the central processing unit cpu of a computer

It is not a good idea in a cover letter to mention another person whom the employer knows.

Explain briefly why you cannot expect to find a previous version of every file with which you work.

Dean wants a quick way to look up staff members by their staff id. in cell q3, nest the existing vlookup function in an iferror function. if the vlookup function returns an error result, the text “invalid staff id” should be displayed by the formula. (hint: you can test that this formula is working by changing the value in cell q2 to 0, but remember to set the value of cell q2 back to 1036 when the testing is complete.)