Question: Please provide complete work, will leave excellent review. 4. Solve for X Y Z when (hint: use row operation not matrices. Also, you may get

Please provide complete work, will leave excellent review.

4. Solve for X Y Z when (hint: use row operation not matrices. Also, you may get negative values and decimal points for the unknowns, it is fine.) X + 2Y + Z = 72 4X + Y + 0.52 = 120 6X + 2Y + 4Z = 144 5. In a Keynesian Macroeconomics model of an economy with no foreign trade it is assumed that: Y =C+I+G+X-M C = 0.9Y Yt = (1- t)y M = 0.2Yt The usual notation applied, and the values below are given: 1=$210m, G=$270m, X=$180m, t=0.3 Find equilibrium value of output Y. (hint; just substitute the given information)

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4. Solve for X Y Z when (hint: use row operation not matrices. Also, you may get negative values and decimal points for the unknowns, it is fine.) + 2 + = 72 4 + + 0.5 = 120 6 + 2 + 4 = 144

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