Which of the following exemplifies regressive taxation?

When estimating GDP, changes in the level of inventory are calculated because:

a. it indicates the level of employment in the economy. b. it provides information about a firm's expectations. c. it is a good indicator of the competitiveness of the economy. d. it shows the level of business spending by firms. e. it determines the value of goods produced in a year but not sold in that year.

A decrease in productivity will cause

A. AS to increase (move down and to the right). B. AS to decrease (move up and to the left). C. AD to decrease (move to the left). D. AD to increase (move to the right).