Question

1. presentation software is an excellent tool to communicate a message and to persuade people. true false 18. what - if analysis is a very powerful and simple tool to test the effects of different assumptions in a spreadsheet. true false 19. general - purpose applications include all the following except: web authoring word processors spreadsheets database management systems

Explanation:

1. Presentation software like PowerPoint can visually present information, making it easy to communicate and persuade. So it's true.
2. What - if analysis in spreadsheets allows changing input values to see how they affect results, which is a powerful and simple feature. So it's true.
3. Word processors, spreadsheets, and database management systems are general - purpose applications. Web authoring is more specialized for creating web content.

Answer:

1. True
2. True
3. web authoring