1. Suppose we know the quantity of good "X" demanded and supplied at two different price levels as shown in the following table:

Harga (Rupiah)	Jumlah Yang Diminta (Unit)	Jumlah Yang Ditawarkan (Unit)
2400	120	200
2000	160	180

Based on the data in the table above, determine the demand function (Qd) and supply function (Qs) of the item "X", and determine the market equilibrium point and draw a graph of the market equilibrium!

2. Based on the demand function and supply function that you obtained in question number 1 above, determine the new market equilibrium point if the government imposes a sales tax per unit (fixed tax) on goods "X" amounting to Rp. 100 / units. What is the tax burden borne by consumers and the tax burden borne by producers, and how much is the government's tax revenue?

3. Determine the market equilibrium point for goods 'X' if the government now imposes a proportional tax or functional tax that is 10% of the selling price (tP = 0.1P) How much tax burden is borne by consumers and the tax burden is borne by producers, and how much is the government's tax revenue ?

4. It is known that the data for an economy is as follows: the total autonomous consumption expenditure of the community is 300 billion, and every time there is an increase in income (Y) of 1 billion, the total consumption expenditure of the community increases by 0.75 billion. a. Determine the form of the consumption function (C) and the saving function (S) and determine the break-even point of the economy b. Determine the form of the consumption function (C) and the saving function (S) if the government imposes a functional tax of 20% of income or tY = 0.10Y

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