Which ones are simple interest and which ones are compound interest

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

Maurice has 54 fewer comic books than rebecca.they have 130 comic books together .how many comic books are in maurices collection ? how many comic books are in rebeccas collection

Atransformation t : (x,y) (x-5,y +3) the image of a(2,-1) is