(1).When income increase from $ 2,000 to $ 2,200, expenditure increases from $3,800 to $4,400,

(1.1) what is the mpe statistics?

(1.2)what is multiplier statistics?.

(2). Suppose that nominal GDP in year one is $ 1000, and in year two $1,100.The GDP deflator is 100 and 106, respectively.

(2.1) What is percentage change of nominal GDP in two years.

(2.2) How much is percentage change in inflation (price change) ?

(2.3) What is percentage change of real GDP in two years ?

(3). Explain Keynesian fiscal policy in dealing with economic depression / recession in business cycle.

(4). Explain four phases of business cycles,including such as economic growth, price change, government policies.

(5).In promoting economic growth, explain .

(5.1) two points of benefit, and

(5.2) two points of cost.