Answer the following asap. will appreciate a lot! got exam tomorrow lol

construct a grammar g generating {xx |x ∈ {a, b}*}

The isometric projection camera technique provides an illusion of perspective by using things like parallax scrolling to create the illusion of 3d in a 2d game

For her science class, elaine is creating a presentation on weather in the united states. she wants to make the presentation beautiful and interesting by drawing simple cloud or wave shapes. which is the best way for elaine to draw these shapes?

While inserting images, the picture command is usually used to insert photos from a digital camera, and the clip art command is usually used to a.edit the sizes and other characteristics of photos that have been inserted. b.take a screenshot of an image and copy it to the clipboard for pasting. c.search for drawings or other images from a library of prepared pictures. d.make illustrations using lines and shapes that are easy to manipulate.