A single server queueing system has an average service time of 8 minutes and an average time between arrivals of 10 minutes. The arrival rate is: a. 6 per hour.
b. 7.5 per hour.
c. 8 per hour.
d. 10 per hour.
e. 12.5 per hour.

Uppose the book-printing industry is competitive and begins in a long-run equilibrium. then hi-tech printing company invents a new process that sharply reduces the cost of printing books. suppose hi-tech's patent prevents other firms from using the new technology. which of the following statements are true about what happens in the short run? check all that apply. hi-tech's average-total-cost curve shifts downward. hi-tech's profits increase. the price of books remains the same. hi-tech's marginal-cost curve remains the same.

When the amount paid for land is $36,000 and the amount paid for expenses is $10,000, the balance in total assets after transaction (b) is

Bella can produce either a combination of 60 silk roses and 80 silk leaves or a combination of 70 silk roses and 55 silk leaves. if she now produces 60 silk roses and 80 silk leaves, what is the opportunity cost of producing an additional 10 silk roses?