Please show formula and calculate.

as described in the following consumption bretion C= 250 + 0.80(Y -1) Suppose further that investment spending is feed at I- 200 Calculate the equilibrium level of GDP in Amoriis. Solve for equilibrium levels of Y. C. and S. Y = 2650.00 . (Round your response to two decimal placess) C = 2250 . (Round your response to two decimal places) 8 = 250 . (Round your response to two decimal places) Now, assume that the Republican Congress in Acearia succeeds in reducing taxes by 20 to a new fixed level Tax multiplier = (Round your response to two dinclinal places and include a minus sign if necessary)