4) (20 points) The government of Happyland has budgeted an expenditure of 150 million Happydollars (their local currency). The information below describes the macroeconomic situation of Happyland: C = 100+ 0.8*Yd; T = 20-0.125*Y; 1 = 666 - 30*r; (M/P) = 4*Y-80*r, and MS/P = 6'000 with P=1. where variables (Y , Y, T, C, I) are expressed in million Happydollars and r is the interest rate expressed in percentage points (i.e. you don't need to change basis and should interpret r = 10 as a 10% interest rate). Note that Y (disposable income) is not the same as Y (income). Given the previous information for the goods and services market and the money market, you are requested to answer the questions below