Using the table, Johnny's marginal cost of the 600th slice of pizza is

The TB (i.e., X- M) is part of the short-run spending equation. With sticky prices, what would be the effect on the TB with an increase (depreciation) of the home nation's exchange rate?

a. Consumers in the home nation would find it more expensive to buy domestic goods compared to foreign goods, and the trade balance would decrease. b. Consumers in the home nation would cut back on both domestic and foreign goods and the trade balance would decrease. c. Consumers in the home nation would increase spending on both domestic and foreign goods, and the trade balance would be unchanged. d. Consumers in the home nation would increase spending on domestic goods and decrease spending on foreign goods, causing the trade balance to increase.

The growth rate of real GDP equals

A) [(real GDP in previous year - real GDP in current year) ÷ real GDP in previous year] × 100. B) [(real GDP in current year - real GDP in previous year) ÷ real GDP in previous year] × 100. C) [(employment in the current year - employment in previous year)/employment in previous year] × 100. D) (real GDP in current year - real GDP in previous year) × 100. E) [(real GDP in current year - real GDP in previous year) ÷ real GDP in current year] × 100.