Answer:

Explanation:
this problem can be solved applying the concept of annuity, keep in mind that an annuity is a formula which allows you to calculate the future value of future payments affected by an interest rate.by definition the future value of an annuity is given by:

where
is the future value of the annuity,
is the interest rate for every period payment, n is the number of payments, and P is the regular amount paid
But there is an special thing to keep in mind and is the initial payment so we must to calculate the 4,000 in the future so we have:



Answer:
Andy should look and identify his field of interest before choosing a specific career path. If she has none of preferences for his career choice then se can look for other factors to select specific career path.
Explanation:
Andy's grandfather has spend his life in building trades and he is a successful person. He thinks Andy should choose same career path as he did and he can be successful too but this is not the case. The thing can be different in this era, the preferences and nature of Andy might be different from his grand father. There are many others factors which also need to be considered as the job security, learning potential in the field, progress in career, wages and pay rise, working environment and others.
Answer:
The correct answer is the second option: unit of account.
Explanation:
To begin with, the particular concept of money, in the economics field, has a lot of application that can vary depending on wheter the use that person is going to give it to it. In the cases where the money is use in the accounts of the companies to keep the books in actual values of the day then the money has the function of acting as a unit of account in order to know how much is the amount that it has to be registered in the books and therefore that the banker is using the money as a unit of account for the bank.