Vette is a retired teacher who lives in Dallas and teaches tennis lessons for extra cash. At a wage of $30 per hour, she is willing to teach 3 hours per week. At $50 per hour, she is willing to teach 7 hours per week. Using the midpoints formula, the elasticity of Yvette's labor supply between the wages of $30 and $50 per hour is approximately ____, which means that Yvette's supply of labor within this wage range is ____.
