Sam wants to trade eggs for sausage. Sally wants to trade sausage for eggs. Sam and Sally have a double-coincidence of wants

If a monopolist lowers its price from $45 to $42 in order to increase its sales volume, marginal revenue

a. equals $45. b. equals $42. c. is less than $42. d. is between $45 and $42.

A manufacturing firm is deciding whether to invest in a new printer that needs an initial investment of $150,000. This will increase cash flows in the first year by $80,000 and $75,000 in the second year. If the interest rate is 10% then the net present value of these cash flows is

a) $5,000 b) - $9,091 c) -$15,290 d) -$21,901