Hi, I need help to answer these question please

A small open economy is described by the following equations: C=50+.75{YI l: I=2{}-2[}r, NX=2iJ-5{}e, hiP=Y-4{}I G=30 T=3{}{} M=3il P=2,5 I'*=5 a. Calculate the equilibrium exchange rate, income and net export. 1). Assume a oating exchange rate. Calculate what happens to the exchange rate, income, net export, and the money supply if the government increases its spending by 50