Esmeralda sells Brussels sprouts at a local farmer's market. Until recently she was charging $1.80 for a pound of Brussels sprouts and was selling 50 pounds a day. She recently increased the price to $2.20 per pound, and as a result her sales dropped to 30 pounds per day. (a) Using the midpoint rule, what is the price elasticity of demand for Esmeralda's Brussels sprouts? (b) Is the demand for the Brussels sprouts elastic or inelastic? (Just enter elastic or inelastic, please check your spelling) (c) Does her total revenue increase or decrease with the change in price? (Just enter increase or decrease, please check your spelling)