Making an allowance for receivables is an example of which concept ?

Which of the following statements is (are) true? i. free entry to a perfectly competitive industry results in the industry's firms earning zero economic profit in the long run, except for the most efficient producers, who may earn economic rent. ii. in a perfectly competitive market, long-run equilibrium is characterized by lmc < p < latc. iii. if a competitive industry is in long-run equilibrium, a decrease in demand causes firms to earn negative profit because the market price will fall below average total cost.

Iceberg storage, a leading hard drive manufacturer, recently filed for bankruptcy. while most of iceberg's competitors were shifting away from physical data storage devices toward online cloud storage services, iceberg invested most of its retained earnings in the effort to improve its hard drives. once the hard-drive market drastically declined, iceberg storage was unable to capitalize on the new technology. which of the following does this scenario best illustrate a. causal ambiguity b. knowledge diffusion c. social complexity d. path dependence

John and sue smith are a married couple who file a joint income tax return. they have two children, so they claim a total of 4 exemptions (based on calendar year 2015 tax law, a personal exemption of $4,000 per person or dependent can be deducted from total income). in addition, they have legitimate itemized deductions totaling $25,750. their total income from wages is $237,500. what is the couple’s taxable income? $195,750 $221,500 $229,500 $205,750