I only need short answer, u guy don't need to answer Q1

QUESTION 1 COVID-19 and Fiscal Response to the pandemic in the Keynesian Cross Model. Consider the following model of the goods market in a closed economy, where s measures the extent of the spread of covid-19 within the country: Z = C+I+G (1) Planned aggregate expenditure C = 5+ (0.75 - s) YD (2) Consumption function I = 2.5 - 2s (3) Planned investment G = 2.5+8 (4) Government expenditure YD = Y - T (5) Disposable income T = 1 + 0.25Y - TR (6) Net Tax function Y = Z (7) Equilibrium Condition Using the above model and rounding to 4 decimal places, solve for the equilibrium value of the government expenditure multiplier when: There is no covid-19 and no transfers, i.e. s = 0 and TR = 0.QUESTION 4 Using the model in Question 1 and rounding to 4 decimal places, solve for the equilibrium value of Y when: The economy is affected by covid-19 with s = 0.2, but there are no transfers TR = 0. QUESTION 5 Using the model in Question 1 and rounding to 4 decimal places, solve for the equilibrium value of Y* when: The economy is affected by covid-19 with s = 0.2, but the government increases transfers to TR = 2.5 QUESTION 6 Using the model in Question 1 and rounding to 4 decimal places, solve for equilibrium net taxes, T*, when: The economy is affected by covid-19 with s = 0.2, but the government increases transfers to TR = 2.5