Mary buys cell-phone services from a company that charges $30 per month. For that $30 she is allowed 600 minutes of free calls and then pays 10 cents per minute for any calls above 600 minutes. Mary has used 600 minutes this month so far. What is her marginal cost per minute of making additional calls

In general, as long as the number of firms that possess a particular valuable resource or capability is less than the number of firms needed to generate perfect competition dynamics in an industry, that resource or capability can be considered and a potential source of competitive advantage.answers: valuablerareinimitableun-substitutable

Identify the accounting assumption or principle that is described below. (a) select the accounting assumption or principle is the rationale for why plant assets are not reported at liquidation value. (note: do not use the historical cost principle.) (b) select the accounting assumption or principle indicates that personal and business record-keeping should be separately maintained. (c) select the accounting assumption or principle assumes that the dollar is the "measuring stick" used to report on financial performance. (d) select the accounting assumption or principle separates financial information into time periods for reporting purposes. (e) select the accounting assumption or principle measurement basis used when a reliable estimate of fair value is not available. (f) select the accounting assumption or principle dictates that companies should disclose all circumstances and events that make a difference to financial statement users.

Comprehensive illustrative problem: mira's store on february 1 20a4 mica delaman opened astore that sells school supplies her main customer are the students and teachers of happy students school that is situated in front of her store. mira wanted to know the financial position of mira's store. mira knew you were studying accounting. so she asked for . 1. to start her business mira's opened a checking account in the name of mira's store . the statement of account from the bank shows that the checking account has a balance of 31,535 of december 31,20a4