Question

only ans q2 and please fast ​

Answer 1

Answer:

the back button appears in the system navigation bar at the bottom of the screen and is used to navigate in reverse chronological order through the history of screens the user has recently worked with

Answer 2

Explanation:

$\sf \red{what \: is \: the \: purpose \: of \: charts \: in \: Ms \: presentation \: }$

• chart is a tool you can use to communicate your data graphically. Displaying charts in PowerPoint allows your audience to see the meaning behind the numbers, and it makes showing comparisons and trends much easier.

$\sf \red{why \: we \: use \: playback \: button}$

• Playback Controls is a floating window that give you a console for controlling the playback of your score. By clicking the expand arrow, Playback Controls expands to display a number of playback options, such as the tempo, range of measures to be played, overall volume level, and so on.

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