Since Pille runs a small business and she wants to create and send invoices to her customers, the productivity software which Pille should use is: OpenOffice Calc.
In Computer technology, there are three (3) main types of software and these include the following:
OpenOffice Calc can be defined as an electronic, open-source productivity suite or spreadsheet software application that is designed and developed for the creation and editing of the following resource:
Read more on OpenOffice Calc here: https://brainly.com/question/20422243
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