11. Calculating the price elasticity of supply Musashi is a volunteer fire fighter living in New York City who teaches clarinet lessons to supplement their normal income. At an hourly wage rate of $15, they are willing to teach 5 hours per week. Upping the wage to $25 per hour, they are willing to teach 14 hours per week. Using the midpoint method, the elasticity of Musashi’s labor supply between the wages of $15 and $25 per hour is approximately , which means that Musashi’s supply of labor over this wage range is .