Problem
Last September, the price of gasoline in Chattanooga was $2 a gallon, and consumers bought 1 million gallons. Suppose the elasticity of demand in September at a price of $2 was -0.5, and that the demand function for gasoline that month was linear. What was that demand function? At what price does consumers' total expenditure on gasoline reach its largest level?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.