1.In an open economy, aggregate demand is the sum of A) consumer expenditure, actual investment spending, and government spending. B) consumer expenditure, planned investment spending, and government spending. C) consumer expenditure, actual investment spending, government spending, and net exports. D) consumer expenditure, planned investmejnt spending, government spending, and net exports.✔ 2.If net exports increase by 100 and the mpc is 0.75, equilibrium aggregate output increases by A) 100. B) 250. C) 400.✔ D) 750. 3.If net exports increase by 250 and the mpc is 0.75, equilibrium aggregate output increases by A) 250. B) 500. C) 750. D) 1000.✔ 4.If net exports decrease by 250 and the mpc is 0.75, equilibrium aggregate output A) increases by 1000. B) increases by 750. C) decreases by 750. D) decreases by 1000.✔ 5.Aggregate output is ________ related to autonomous consumer expenditure, and is ________ related to planned investment spending. A) negatively; negatively B) negatively; posi...