2. Suppose that a Starbucks store raises the price of its premium coffee from $2.50 to $2.75 per cup, and as a result, the quantity sold per day decreased from 550 to 460 cups. a. Calculate the price elasticity for this change. Show formula and math? (4 pts.) b. Is this change in price going to successfully increase Starbucks' profits? Explain making references to additional concepts in this chapter. (5 pts.)