Countries with reliable phone service have difficulty not only communicating, but also reaping the benefits of other technology advances, such as the Internet

The condition in circular-flow models whereby firms purchase all the goods not purchased by households is that

A) inventory investment is zero. B) saving is zero. C) fixed investment is zero. D) consumption equals investment. E) investment equals saving.

Which of the following observations is true?

A. TFC remains the same irrespective of units of output produced. B. TVC remains the same irrespective of units of output produced. C. TVC falls as the unit of output increases. D. AFC increases as output increases further and further.