The minimum-efficient scale for a typical firm producing water filters is 30,000 water filters. If the market demand is 630,000 water filters, how many firms producing at minimum-efficient scale can the market support

Hundreds of a bank's customers have called the customer service call center to complain that they are receiving text messages on their phone telling them to access a website and enter personal information to resolve an issue with their account. what action should the bank take?

Taking commercial paper means the holder acts honestly

Shawn received an e-mail offering a great deal on music, movie, and game downloads. he has never heard of the company, and the e-mail address and company name do not match. what should shawn do?