I need help please

You are given the following information about the economy of Snowland: Autonomous consumption expenditure is $2 billion, and the marginal propensity to consume is 0.78. Investment is $5 billion, government expenditures on goods and services are $5 billion, and net taxes are a constant $3 billion. (Assume this is a closed economy with no exports and imports)3. Calculate the equilibrium Expenditure [Hint: use Y=AE] 4. Calculate the government expenditures and the tax multipliers? 5. A recession has hit the economy and government has decided to rise its spending on goods and services by $5 billion. How much GDP will change