What makes simple machines useful for people without enough strength to complete a task?
a. work is reduced, while time is decreased.
b. input force is reduced, while time is increased.
c. power is increased, while distance is decreased.
d. input force is reduced, while distance is increased.

Aletter or menu command that starts an action when the user presses the designated letter and the alt key together is called what?

Aconstruction company is creating a powerpoint presentation describing how they calculate costs during each construction step. they plan to email this presentation to clients. the individual clients will be watching the presentation slide show on their own personal computers. what is the most important formatting step the company should take to make the text readable and pleasing to the eye?

How do you take a green screen out of the video while editing?