If a firm enjoys economies of scale up to a certain output level, and cost then increases proportionally with output, what can you say about the shape of the long-run average cost curve? the long-run average cost
a. is decreasing.
b. is horizontal.
c. is increasing.
d. decreases initially and then is horizontal.
e. is u-shaped.

As related to a company completing the purchase to pay process, is there an accounting journal entry "behind the scenes" when xyz company pays for the goods within 10 days of the invoice (gross method is used for discounts and terms are 2/10 net 30) that updates the general ledger?

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?

What is the relationship between credit and debt?