John has decided to start his own lawn-mowing business. to purchase the mowers and the trailer to transport the mowers, john withdrew $1,000 from his savings account, which was earning 3% interest, and borrowed an additional $2,000 from the bank at an interest rate of 7%. what is john's annual opportunity cost of the financial capital that has been invested in the business?
a. $30b. $140c. $170d. $300

How would you cite different books by the same author on the works cited page? a. moore, jack h. folk songs and ballads. salem: poetry press, 1999. print. moore, jack h. ballads in poetry – a critical review. dallas: garden books, 1962. print. b. moore, jack h. folk songs and ballads. salem: poetry press, 1999. print. –––. ballads in poetry – a critical review. dallas: garden books, 1962. print. c. moore, jack h. ballads in poetry – a critical review. dallas: garden books, 1962. print. moore, jack h. folk songs and ballads. salem: poetry press, 1999. print. d. moore, jack h. ballads in poetry – a critical review. dallas: garden books, 1962. print. –––. folk songs and ballads. salem: poetry press, 1999. print.

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 each of the following statements best illustrates the concept of consumer surplus, producer surplus, or neither. statement consumer surplus producer surplus neither a local store was having a sale on textbooks, so i bought a used textbook for my brother. i sold a watch for $61, even though i was willing to go as low as $55 in order to sell it. even though i was willing to pay up to $116 for a used laptop, i bought a used laptop for only $110.