Clancy is a retired teacher who lives in Chicago and provides math tutoring for extra cash. At a wage of $40 per hour, he is willing to tutor 7 hours per week. At $50 per hour, he is willing to tutor 10 hours per week.
Using the midpoint method, the elasticity of Clancy's labor supply between the wages of $40 and $50 per hour is approximately ____, which means that Clancy's supply of labor over this wage range is ____.