QUESTION 21 Price E. C B Quantity 52 50 51 Fig.3.3 Refer to Figure 3-3. A change from Point A to Point B represents a(n): increase in supply. decrease in supply, increase in quantity supplied.

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A merchant who sells newspapers and magazines at the corner kiosk heard you manage the Times’ inventory and asks for your advice. She has a small, variable number of customers who daily purchase the Chicago Sun Times. In order to get the newspapers in time, she has to place an order for the next day’s newspapers before noon. She pays $0.50 for each newspaper and sells them for $1.50 each. She has kept detailed records of her past sales of the Chicago Sun Times and estimates that 10% of the time she sells 10 newspapers, 40% of the time she sells 11, 30% of the time she sells 12, and 20% of the time she sells 13. (a) What is the merchant’s marginal profit and marginal loss? (b) Determine how many Chicago Sun Times newspapers she should buy every day to maximize expected profits. (c) Calculate the merchant’s expected profits for the optimal order quantity. (d) The merchant has always purchased 13 newspapers, thinking that the best way to maximize profits was to always meet the demand.…

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In October 2015, amid rising fears about the security of credit card transactions, financial institutions and businesses made the transition to using chip cards. Unlike the quick swipe of a magnetic stripe on the back of traditional credit and debit cards, chip cards have to be left inside the terminal while the embedded chip verifies the transaction. While there is no consistent method for measuring transaction speed, news agencies report average chip speeds of anywhere from 8 seconds to 13 seconds. The switch to chip readers was precarious, with many businesses taping over the chip card slots in the terminals until the kinks were worked out. Even after a year, some businesses still could not process chips and continued to utilize the magnetic stripe for transactions. Financial institutions thought the additional security benefits of the chips would overshadow the added wait times. Yet a survey conducted by Harbortouch, a leading point-of-sale company, in 2016 showed that nearly four…

Find the price and income elasticity of demand for the following demand functions at the given point on demand.