I'm really lost... In an economy with no exports or imports, autonomous consumption is $1Trillion, the marginal propensity to consume is 0.8, investment is $5 Trillion, and Government expenditure is $4Trillion. Taxes are $4trilion and do not vary with real GDP. A. Calculate disposable income when real GDP is $30 trillion B. Calculate consumptioin expenditure when real GDP is $30 trillion C. Calcualte aggregate planned expenditure when real GDP is 30 trillion D. Calculate equilibrium expenditure. Theres more but if I can get help w/ these I can do the rest.