Danny "Dimes" Donahue is a neighborhood’s 9-year-old entrepreneur. His most recent venture is selling homemade brownies that he bakes himself. At a price of $1.75 each, he sells 250. At a price of $1.25 each, he sells 300. Instructions: Use the midpoint method and round your answer to 2 decimal places. Do not include a minus sign. a. What is the elasticity of demand