Answer:
2.
Explanation:
Annotating in PowerPoint is the create notes while delivering a PowerPoint presentation. This could be done in two ways.
First, right click with the mouse and select 'pointer options'. Then you can choose either pen or highlighter to circle certain word or highlight any line.
The second way of creating annotation is by going to View→Normal→Notes.
After you select 'notes', a pane will appear at the bottom of your presentation.
So, the correct answer that annotation tools menu is available in Normal. Thus option 2 is correct.
Answer: Something people can change and share. It is usually given the bad name of have a bunch of fake information and bugs. Wikipedia is a good example of an open source website but it is not a program.
Explanation: An open source program is a program where you have free rein to basically do whatever you want to it.
Answer:
previousAddition instance variable
Explanation:
In order to accomplish this you would need to add a previousAddition instance variable. In this variable you would need to save the amount that was added at the end of the process. Therefore, if a mistake were to occur you can simply call the previousAddition variable which would have that amount and subtract it from the total. This would quickly reverse the mistake, and can be easily called from the undo() method.
