Yvette is a retired teacher who lives in Chicago and provides math tutoring for extra cash. At a wage of $50 per hour, she is willing to tutor 10 hours per week. At $75 per hour, she is willing to tutor 18 hours per week. Using the midpoint method, the elasticity of Yvette's labor supply between the wages of exist50 and $75 per hour is _____, which means that Yvette's supply of labor over this wage range is _____. a. elastic b. unit elastic c. inelastic.