<span>Annual = Years = 6.64; Actually 7 years
Monthly = Years = 6.33; 6 Years, 4 months
Daily = Years = 6.30; 6 Years, 111 days
Continuously = 6.30; 6 Years, 110 days
The formula for compound interest is
FV = P*(1 + R/n)^(nt)
where
FV = Future Value
P = Principle
R = Annual interest rate
n = number of periods per year
t = number of years
For this problem, we can ignore p and concentrate on the (1+R/n)^(nt) term, looking for where it becomes 2. So let's use this simplified formula:
2 = (1 + R/n)^(nt)
With R, n, and t having the same meaning as in the original formula.
For for the case of compounding annually
2 = (1 + R/n)^(nt)
2 = (1 + 0.11/1)^(1t)
2 = (1.11)^t
The above equation is effectively asking for the logarithm of 2 using a base of 1.11. To do this take the log of 2 and divide by the log of 1.11. So
log(2) / log(1.11) = 0.301029996 / 0.045322979 = 6.641884618
This explanation of creating logarithms to arbitrary bases will not be repeated for the other problems.
The value of 6.641884618 indicates that many periods is needed. 6 is too low giving an increase of
1.11^6 =1.870414552
and 7 is too high, giving an increase of 1.11^7 = 2.076160153
But for the purpose of this problem, I'll say you double your money after 7 years.
For compounding monthly:
2 = (1 + R/n)^(nt)
2 = (1 + 0.11/12)^(12t)
2 = (1 + 0.009166667)^(12t)
2 = 1.009166667^(12t)
log(2)/log(1.009166667) = 0.301029996 / 0.003962897 = 75.96210258
And since the logarithm is actually 12*t, divide by 12
75.96210258 / 12 = 6.330175215
Which is 6 years and 4 months.
For compounding daily:
2 = (1 + 0.11/365)^(365t)
2 = (1 + 0.00030137)^(365t)
2 = 1.00030137^(365t)
log(2)/log(1.00030137) = 0.301029996 / 0.000130864 = 2300.334928
2300.334928 / 365 = 6.302287474
Continuously:
For continuous compounding, there's a bit of calculus required and the final formula is
FV = Pe^(rt)
where
FV = Future value
P = Principle
e = mathematical constant e. Approximately 2.718281828
r = Interest rate
t = time in years
Just as before, we'll simplify the formula and use
2 = e^(rt)
Since we have the function ln(x) which is the natural log of x, I won't bother doing log conversions.
rt = ln(2)
0.11 * t = 0.693147181
t = 0.693147181 / 0.11
t = 6.301338005</span>
Answer: Some employers and workers will agree on a wage less than $20 and not report the wages to the government; black market
Explanation: When the minimum wage is set above the equilibrium wage it leads to a surplus of labor in the market. There are more job seekers than the firms demand at the minimum wage of $20. Thus, the only possible option will be that some employers and workers will agree on a wage less than $20 and not report the wages to the government. When this happens it leads to black marketing. Black market is an underground economy the transactions of which are not reported to the government.
Answer: An investigative report
Explanation:
An investigative report is created with the intent which is that it may be used in a court of law. The investigative report should be succinct and must focus on the mission of the investigation.
The investigator's primary purpose is to find information and evidence on a precise matter, in order to recover significant documents, or certain file types. The goal of the investigation is usually defined by ones client who could either be internal to the organization one works for or another lawyer or investigator.
Answer: d. All of these are candidates for depth interviews.
Explanation:
Depth interview is a research technique which is qualitative and involves conducting individual interviews which are very intense with the respondents in order to have their idea regarding certain topics or issues.
Candidates for depth interviews could include current customers, members of the target market and the executives and managers of the company. Therefore, all of these are candidates for depth interviews.
