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1-Suppose that we have the following sales function: Q X = -4P x + 2P Y + 0.2I +

ID: 1133802 • Letter: 1

Question

1-Suppose that we have the following sales function: QX = -4Px + 2PY + 0.2I + 0.04A

Px = $ 200, the Price of good X, Py = $140, the price of good Y, I =2,000, income, A = $15,000 advertizing expenditures

Demand for good X could be classified as ?

2- the demand for Hybrid fuel efficient cars can be characterized by the following point elasticities: price elasticity -4, cross-price elasticity with Smart Cars = +2, and income elasticity is 2.5.

According to above mentioned information, hybrid fuel efficient cars are?

3- We have the following sales function: QX = -4Px + 2PY + 0.2I + 0.04A, where:

Px = $ 200, the Price of good X , Py = $140, the price of good Y, I =2,000, income, A = $15,000 advertizing expenditures.

From the above equation we can infer that product X and product Y are?

4-The price of the water resistant mascara of WOMEN BUTY Corp. decreased from $10 a unit to $8 a unit and the quantity sold during last month increased by twelve percent. Hence the demand for WOMEN BUTY water resistant mascara is?

Explanation / Answer

Answer- Qx = -4(200)+ 2(140)+ 0.2(2000)+0.04(15000)

= -800+280+400+600

= 480

Also dQx/dpx = -4 so demand for good x could be classified as Normal good as price of good x increases the quantity demanded for it decreases.

(2) the hybrid fuel efficient cars are highly elastic.

(3) dQx/dpy = 2 , so good X and Y are substitutes for each other.

(4) elastic