A monopoly firm faces two markets where the inverse demand curves are:
Market A: P_A = 140 - 2.75Q_A.
Market B: P_B = 120 - Q_B.
The firm operates a single plant where total cost is C = 20Q + 0.25Q^2, and mammal cost is m = 20 + 0.5Q.
Required:
1. Suppose the firm sets a single price for both markets. Using the information above, the profit maximizing price is $86.18 and the profit maximizing quantity is 53.37 units. Given this information, you determine that the firm will earn a profit of $ .
2. Now suppose the firm is able to engage in group price discrimination. To maximize profits, the firm will produce 16.95 units for market A and charge customers in market A a price of $ 93.39 per unit. And it will produce 36.6 units for market B and change customers in market B a price of $ per unit.
3. If the firm engages in your price discrimination it will earn a profit of $ .

Risk is the risk of a decline in a bond's value due to an increase in interest rates. this risk is higher on bonds that have long maturities than on bonds that will mature in the near future. risk is the risk that a decline in interest rates will lead to a decline in income from a bond portfolio. this risk is obviously high on callable bonds. it is also high on short-term bonds because the shorter the bond's maturity, the fewer the years before the relatively high old-coupon bonds will be replaced with new low-coupon issues. which type of risk is more relevant to an investor depends on the investor's , which is the period of time an investor plans to hold a particular investment. longer maturity bonds have high risk but low risk, while higher coupon bonds have a higher level of risk and a lower level of risk. to account for the effects related to both a bond's maturity and coupon, many analysts focus on a measure called , which is the weighted average of the time it takes to receive each of the bond's cash flows. conceptual question: which of the following bonds would have the largest duration? a)10year-zero coupon bonds b)10year-7% annual coupon bonds c)10year-3% annual coupon bonds d)5year-3% annual coupon bonds e)3year-7% annual coupon bonds