Store A sells silver wire for $8.00 per yard. Store B sells silver wire by the spool for $8.00 per spool. The cost of wire at either store can be modeled by the function () = 8, where is the number of yards for Store A and is the number of spools of wire for Store B. The domain of () = 8 is all real numbers. For each store, drag all the additional restrictions needed on values of for () to model each situation.