Beth is a retired teacher who lives in dallas and does some consulting work for extra cash. at a wage of $40 per hour, she is willing to work 7 hours per week. at $50 per hour, she is willing to work 10 hours per week. using the midpoint method, the elasticity of beth's labor supply between the wages of $40 and $50 per hour is approximately , which means that beth's supply of labor over this wage range is .