total health care spending in the U. S. during 2005 was $2 trillion, representing approximately 16% of the gross domestic product. Estimate the gross domestic product of the U. S. in 2005 to the nearest billion dollars.

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done