Which graph represents a function whose inverse is also a function?

Ahummingbird lives in a nest that is 15 feet high in a tree.the hummingbird flies 17 feet to get from its nest to a flower on the ground.how far is the flower from the base of the tree?

Classify the following triangle.. select all that apply

Ed employee has weekly earnings of $544.00, and he claims 2 exemptions. how much tax is withheld?