Consider two systems, C and D. System C has three serial components each with reliabilities of 0.95. Two of the components have backups with reliabilities of 0.90. System D has three serial components with reliabilities of 0.90. Each of these components has a backup with a 0.90 reliability. If each 0.90 reliable component costs $1000, each 0.95 component costs $2000, and the cost of failure is $10,000, what is the approximate cost of system C? A. $6300
B. $7400
C. $8595
D. $9700

Google started as one of many internet search engines, amazon started as an online book seller, and ebay began as a site where people could sell used personal items in auctions. these firms have grown to be so large and dominant that they are facing antitrust scrutiny from competition regulators in the us and elsewhere. did these online giants grow by fairly beating competition, or did they use unfair advantages? are there any clouds on the horizon for these firms -- could they face diseconomies of scale or diseconomies of scope as they continue to grow? if so, what factors may limit their continued growth?

Identify whether the statements are true or false by dragging and dropping the appropriate term into the bin provided. long-run economic growth is unlikely to be sustainable because of finite natural resources. in the modern economy, countries that possess few domestic natural resources essentially have no chance to develop economically. finding alternatives to natural resources will be very important to long-term economic growth. in the modern economy, human and physical capital are generally less important in productivity than natural resources. in the 19th century, countries with the highest per capita gdp were nearly always abundant in minerals and productive farming land.

Assume the total cost of a college education will be $250,000 when your child enters college in 17 years. you presently have $69,000 to invest. what annual rate of interest must you earn on your investment to cover the cost of your child’s college education? (do not round intermediate calculations. enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)