Suppose that the Consumption Function in an economy is given by: C$=80+0\mathrm{.}6$Y Also assume that: I $=0$ G$=0$ NX $=0$ If the Marginal Propensity to Consume $($MPC$)$ is equal to $0\mathrm{.}8,$ then what must be the tax rate in this example? What must be the Savings Function as a function of National Income $($Y$)$ be$?$ What is the AEF as a function of National Income $($Y$)?$ What is the equilibrium National Income $($Y$)?$ What is equilibrium Desired Consumption $($C$)$ and Desired Savings $($S$)$ in this example?