Answer:
Suppose the cost per hour incurred in operating a cruise ship is 3a + b 
dollars per hour, where a and b are positive constants and v is the ship's speed in miles per hour. At what speed (in miles per hour) should the ship be operated between two ports, at a distance D miles apart, to minimize the cost? (Hint: Minimize the cost, not the cost per hour.)
<em>The speed at which the ship would maximize cost is </em>![\sqrt[3]{\frac{3a}{2b} }](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B%5Cfrac%7B3a%7D%7B2b%7D%20%7D)
Explanation:
The problem can be solved using differentiation to get the minimum value of the speed to travel between the two ports. Step by step calculation is contained in the attached images;
Answer:
I can't figure it out sorry
Answer:
A. the double coincidence of wants problem.
Explanation:
Trade by barter involves the exchange of goods and services for goods and services without the use of money as a medium of exchange. In barter system, there is what we call double coincidence of wants. This is the economic situation whereby both parties holds what the other wants to buy, so they exchange the goods directly. Here, both parties agrees to buy and sell each other commodities. However, if one of the party is not interested in what the other party is offering, it causes a disruption in the trade. This disruption refers to a drawback in the system like the example described in the question.
Here, Andy couldn't make a deal with Danny even tho he wants what Danny is offering. This is because what Danny isn't interested in what Andy is offering. Thus, the double coincidence of want and barter trade can't occur between the two parties.
Answer: The correct answer is e). 3.67%
Explanation: An ordinary annuity is a series of payments made at the end of each period.
The formula for ordinary annuity is PV = PMT × ((1 - (1 + r) ^ -n)/ r)
Where; PMT = the periodic cash payment; r = the interest rate per period; n = the total number of periods and PV = present value.
Therefore; 3500000 = 250000×((1-(1+r)^-20)/r
This will give the rate as 3.67%
