The price of long-distance telephone service fell from 40 cents per minute in 1996 to 22 cents per minute in 1999, a 45-percent (18 cents/40 cents) decrease. Suppos that the Consumer Price Index increased by 12 percent over this period. What happened to the real price of telephone service? The real price of telephone service by percent. (Enter your response rounded to two decimal places.)

Nile.com, the online bookseller, wants to increase its total revenue. One strategy is to offer a 10% discount on every book it sells. Nile.com knows that its customers can be divided into two distinct groups according to their likely responses to the discount. The accompanying table shows how the two groups respond to the discount. Group A Group B(sales per week) (sales per week) Volume of sales beforethe 10% discount 1.55 million 1.50 million Volume of sales afterthe 10% discount 1.65 million 1.70 million A. Using the midpoint method, calculate the price elasticities of demand for group A and group B. B. Explain how the discount will affect total revenue from each group. C. Suppose Nile.com knows which group each customer belongs to when he or she logs on and can choose whether or not to offer the 10% discount. If Nile.com wants to increase its total revenue, should discounts be offered to group A or to group B, to neither group, or to both groups?

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he quantity demanded each month of Russo Espresso Makers is 250 when the unit price is $136. The quantity demanded ach month is 1000 when the unit price is $106. The suppliers will market 750 espresso makers when the unit price is $80 er higher. At a unit price of $100, they are willing to market 2250 units. Both the supply and demand equations are known o be linear. (a) Find the demand equation. -1 -x + 146 25 p = (b) Find the supply equation. 1 x+ 70 p = 75* (c) Find the equilibrium quantity and the equilibrium price. |× units