4. Modify the Solow growth model by including government spending, as follows. The government purchases G units of consumption goods in the current period, where G = 9N and g is a positive constant. The government nances its purchases through lumpsum taxes on consumers, where T denotes total taxes, and the government budget is balanced each period, so that T = G. Consumer consume a constant fraction of disposable income that is, C = (1 s)(Y T), Where s is the savings rate, with 0