In VF, if you "x out" the app by pressing the home button twice and clicking the app picture, will time stop on your VF game? I am sorry if you do not know what I mean.

No, it will not. All that does is close the app, similar to if you closed the game on your computer. In order to stop time and completely pause the game, you must select "Done" on the Options Menu after setting pause to "Yes" and then either quit the game or select Play to return to the main game screen. Leaving the game on the Options or Menu screen does not pause the game.