Five hundred units of good x are currently bought and sold. The marginal buyer is willing to pay $40 for the 500th unit, and the cost to the marginal seller is $35 for the 500th unit. We know that:.a. the equilibrium price of good X is somewhere between $35 and $40.b. the equilibrium quantity of good X exceeds 500 units. c. 500 units is not an efficient quantity of good X. d. all of the above are correct.

D : All options are correct

Explanation:

- The marginal buyer is the essence of demand curve while marginal seller is essence of supply curve.

- @ Q = 500 units,    Selling Price is set at SP = $35

- @ Q = 500 units,    Buying Price is set at BP = $40

- Since, SP ≠ BP our equilibrium price would be $ 37.5 assuming the price elasticity of demand and supply are equal. In any case the equilibrium price would lie in between [ 35 , 40 ] such that to prevent a shortage of units in near future.

- Moreover, if the seller decides to sell at price $35 then he must sell goods greater than 500 units to reach the equilibrium profits. However, it could also lead to excess of units or surplus.

- We see that from selling the goods at SP = $35 while the buyer is willing to pay BP = $40 for 500 goods, the seller would be under-profiting and would be earning $5*500 = $2,500 less than he would at equilibrium price of $40 and selling units greater than 500. Hence, 500 goods is not an efficient quantity of goods.

being born in poverty would limit the people's chances, opportunities and benefits.

this happen because of several things, such as:

- poor people tend to gain less access to good education and nutrition. this mean that their chance to obtain high paying jobs would also be limited.

- poor people tend to socialize with other poor people while the rich tend to socialize with other rich people. this means that simply throguh their social circle, rich people would have more business opportunities compared to the poor people.

- rich people tend to have more capital in their disposal. this would benefit them in business since it is far easier for them to fund their business operation compared to poor people.