Consider the following macro model where a, m are positive parame- ters, and t is the given average tax rate. Y C = C+ Go+N 100+ a(Y - tY) N = 50-mY (i) Write the system in matrix form AX = B, where X = (ii) Using Cramer's rule, solve for the predicted GDP (Y). (iii) Specify the tax multiplier. Y N