Aruna owns Pottery Plus, a small firm that produces terra cotta pots for sale in the Edmonton area. The graph below shows Aruna's demand curve. Price ($) 40 36 32 28 24 20 16 12 8 4 0 4 8 12 16 20 24 28 32 36 40 Quantity per perioda. If the firm wishes to maximize its total revenue, at what price should it sell its pots? 18 What is its total revenue? $ 396 b. Suppose that the firm were to increase its price by $4 from the price in (a). What will be the change in its total revenue? Give your answer as an absolute number. What is the co-efficient for the price elasticity of demand between those two prices? Round your price answer to two decimal places. c. Suppose that the firm were to decrease its price by $4 from the price in (a). What will be the change in its total revenue? Give your answer as an absolute number. What is the co-efficient for price elasticity of demand between those two prices? Round your price answer to two decimal places