a. Over the last 60 years, what expenditure category has had the largest relative weight on U. S. GDP? And the smallest? b. How did World War II (1939-1945) affect the composition of GDP according to the expenditure approach? Why would that be so? c. What does it mean, in economic terms, that the ratio of net exports to overall GDP turned from positive to negative sometime in the mid-1970s? d. Compare the evolution of gross private domestic investment and of government consumption expenditures and gross investment during the 2007-2009 recession. Do they move in the same, or in opposite directions? Why would that be so?

Required: 1-a. the marketing manager argues that a $5,000 increase in the monthly advertising budget would increase monthly sales by $9,000. calculate the increase or decrease in net operating income. 1-b. should the advertising budget be increased ? yes no hintsreferencesebook & resources hint #1 check my work 8.value: 1.00 pointsrequired information 2-a. refer to the original data. management is considering using higher-quality components that would increase the variable expense by $2 per unit. the marketing manager believes that the higher-quality product would increase sales by 10% per month. calculate the change in total contribution margin. 2-b. should the higher-quality components be used? yes no