Read this excerpt from "The All-American Slurp." Mrs. Gleason kept smiling. "Would you like to try some of the dip, Mrs. Lin? It’s my own recipe: sour cream and onion flakes, with a dash of Tabasco sauce."

What story element does the author develop in this excerpt?

. a function is a relation in which each input has only one output. in the relation , y is a function of x, because for each input x (1, 2, 3, or 0), there is only one output y. x is not a function of y, because the input y = 3 has multiple outputs: x = 1 and x = 2.

greywater is gently used water from your bathroom sinks, showers, tubs, and washing machines. it is not water that has come into contact with feces, either from the toilet or from washing diapers. greywater may contain traces of dirt, food, grease, hair, and certain household cleaning products.