Since Joan wants to see what her presentation would look like in the eyes of her audience, it might be best for her to use the Slideshow view that is available at the bottom right side of her desktop view.
This option is a full-screen form of her Normal view in Microsoft PowerPoint. The Slideshow view is represented by the projector screen symbol next to the zoom in and out bar.
You have add more for anyone to be able to answer this, sorry
Answer is the son-father-grandfather concept. Good luck

By definition a computer is an electronic device used to store and compute data. So, by definition a calculator stores and interprets data/numbers, and that makes it a computer. However, a computer can also use programs, and manipulate stored data to complete those programs.
hope it helps!! :D