Answer:
When Economists say that humans make decisions at the margin they mean that decisions are made on the basis of the cost and benefit of getting an additional unit of a good/ service.
Marginal benefit refers to the additional utility that we will derive from consuming one extra unit of a good or service and factors in heavily into our decision making. We usually accept a decision if the Marginal benefit is higher or equal to the Marginal cost ( cost of the additional unit) of the good/service.
If the Marginal Cost is instead higher, the decision would most probably be cancelled.
Answer:
the equilibrium price but not above or below the equilibrium price.
Explanation:
At equilibrium price, quantity demanded equals quantity supplied. At this point, buyers are able to buy all they want to buy and sellers are able to sell all they want
Above equilibrium price, there would be a surplus. the quantity supplied would exceed the quantity demanded. Sellers would not be able to sell all they want in this case
Below the equilibrium price, there would be a shortage. the quantity demanded would exceed the quantity supplied. buyers would not be able to buy all they want
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Answer:
How should she compute her required annual investment?
$ 36.987
Explanation:
With the present value formula we can calculate how she has to invest today to get $45,000 at the end of the 5 years, with a compounded rate of 4%.
Principal Present Value = F / (1 + r)^t
In this case we have the future value and we need to find the present value that we have to invest to get the money expected.
Principal Present Value = 45,000 / (1 + 4%)^5 = $36,987
If we invest today $36,987, with a compounded interest rate of 4% we get at the end of the period, 5 years, the total sum of $45,000.
