How does an economist calculate gdp for one year using the expenditure approach?
a. add together all the amounts spent on final goods and services.
b. add up all the incomes received.
c. add the amounts spent on goods and services to the incomes received.
d. subtract the amounts received as income from the goods and services.

Krier industries has just completed its sales forecasts and its marketing department estimates that the company will sell 43,800 units during the upcoming year. in the past, management has maintained inventories of finished goods at approximately 3 months' sales. however, the estimated inventory at the start of the year of the budget period is only 7,300 units. sales occur evenly throughout the year. what is the estimated production level (units) for the first month of the upcoming budget year?