Study Problem 4-10 (algo) Adam makes specialized garden figurines in a small shop on his property, and his monthly total sales revenue is $700 when he charges $20 for each figurine. One month, he tried lowering his price to $15, and his total sales revenue that month was $630. On the basis of these data, what is the price elasticity of demand for Adam's product? Round your answer to 2 decimal places. €= -0.84