Collect right answer..

1. When the price of the normal material, material X, falls, choose all that are appropriate.

When income is expected to increase

When prices are expected to rise

When the supply of material Y, a substitute material, increases

When the demand for the complementary material Z decreases

When a certain amount of tax per unit is imposed on X goods

2. Choose all that are correct as an explanation for the price elasticity of demand.

If the demand curve is a straight line oriented downward, the price elasticity is different at all points on the demand curve.

If someone always spends a certain percentage of their income on purchasing X goods, the price elasticity of demand for X goods is constant

. If the purchase amount for a good is a large proportion of the total expenditure, The price elasticity of yo is small.

If a consumer spends all of his income only on the purchase of one good, the price elasticity of demand is zero.

If the price elasticity of demand is always constant, there is a possibility that the demand curve is straight.

3. Choose all that are correct as an explanation for consumer surplus.

When prices are the same, the more elastic the demand, the greater the consumer surplus.

In the case of the same price, the more inelastic the demand, the greater the consumer surplus.

The more elastic the supply, the greater the consumer surplus.

The more inelastic the supply, the greater the consumer surplus.

When demand is completely elastic, consumer surplus is zero.

4. Choose all the correct explanations related to utility maximization.

Consumers maximize satisfaction with a given budget by purchasing each product so that the marginal utility per unit is the same. can do.

If the price of inferior goods rises, consumers reduce the purchase of these inferior goods due to the substitution effect, but Because of this, it increases the purchase quantity

If the marginal utility of material X is greater than the marginal utility of material Y, a reasonable consumer increases the purchase amount of material X and It will reduce the dosage.

Even if all of the given income is spent on the purchase of goods X and Y, it is guaranteed that the utility is maximized. There is no.

The slope (absolute value) of the budget line represents the amount of money that can be purchased for one unit of Y material.

5. Suppose that the government can support income or subsidize food prices for low-income people. The economic effect of government spending Choose all of the explanations for the lesson that are correct. (However, the indifference curve of the low-income class is convex with respect to the origin. All)

If the policy goal is to increase the utility of individuals, price subsidies are more effective.

In the case of a price subsidy policy, only substitution effect occurs.

Cash subsidy policies only generate income effects.

The reason why the price subsidy policy is inefficient is because the relative price changes.

In the two policies, the budget line for the low-income class is different.

6. Some consumers spend X and Y goods for a given income. While the price of Y is unchanged, the price of X is When it fell 10%, this consumer's purchase of Y goods decreased. Choose all that are right for this explanation. Please.

Material X is a luxury material. Y is inferior. Demand for X materials is elastic. The price consumption curve is upward upward. Materials X and Y are substitutes for each other.