Figure WDX 2-1 The dialog box in the accompanying figure is used to insert formulas in ____.

What is a HUD (heads-up display) system used for?

What will be an ideal response?

Under the guise of justice, some less scrupulous administrators may even be tempted to ____, or hack into a hacker's system to find out as much as possible about the hacker.

A. reverse hack B. back hack C. white hack D. transpose