<span>IP-PBX Internet Protocol Private Branch Exchange is a system used to allow switching between Voip and local landlines while maintaining open lines on each phone. An IP-BPX system can switch between VoIP and landline calls or between 2 landline calls. </span>
The demand and marginal revenue for a perfectly competitive firm are horizontal , whereas the demand and marginal revenue for monopolists are downward
<h3>What is meant by marginal revenue?</h3>
The increase in revenue that comes from selling one more unit of output is known as marginal revenue. Although marginal revenue can remain constant at a certain level of output, it will eventually start to decline as the output level rises due to the law of diminishing returns. The increased total revenue produced by increasing product sales by one unit is known as marginal revenue and is a key topic in microeconomics.
An individual, group, or business that dominates and controls the market for a particular commodity or service is referred to as a monopolist. Due to the absence of substitute products or services and competition, the monopolist has the ability to command high prices. According to Irving Fisher, a monopoly is a market where there is "no competition," which results in a situation where one person or business is the only supplier of a specific good or service.
Hence, The demand and marginal revenue for a perfectly competitive firm are horizontal , whereas the demand and marginal revenue for monopolists are downward.
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Answer:
Depositing in bank is a better option.
Explanation:
For this solution, we can either determine the interest rate given to George by his one of the friend or the future worth method,
Future worth method is used here,
Given that,
PV = $6,900
R = 9%
N = 10 Years



FV = 6,900 × 2.3673
FV = $16,334.81
Since, the future worth of investing in bank is more than the money to be offered by the George's friend (16,334.81 > 12,900) and hence, depositing in bank is a better option.
Answer:
- <em>As explained below, given that the score of the person is among the 0.03125 fraction of the best applicants, </em><u><em>he can count on getting one of the jobs.</em></u>
<em></em>
Explanation:
The hint is to use <em>Chebyshev’s Theorem.</em>
Chebyshev’s Theorem applies to any data set, even if it is not bell-shaped.
Chebyshev’s Theorem states that at least 1−1/k² of the data lie within k standard deviations of the mean.
For this sample you have:
- mean: 60
- standard deviation: 6
- score: 84
The number of standard deviations that 84 is from the mean is:
- k = (score - mean) / standar deviation
- k = (84 - 60) / 6 = 24 / 6 = 4
Thus, the score of the person is 4 standard deviations above the mean.
How good is that?
Chebyshev’s Theorem states that at least 1−1/k² of the data lie within k standard deviations of the mean. For k = 4, that is:
- 1 - 1/4² = 1 - 1/16 = 0.9375
- That means that half of 1 - 0.9375 are above k = 4: 0.03125
- Then, 1 - 0.03125 are below k = 4: 0.96875
Since there are 70 positions and 1,000 aplicants, 70/1,000 = 0.07. The compnay should select the best 0.07 of the applicants.
Given that the score of the person is among the 0.03125 upper fraction of the applicants, this person can count of geting one of the jobs.
Answer:
C. increase if beef is a normal good; decrease if rice is an inferior good.
Explanation:
As the average income in China continues to increase, we would expect the demand for beef to increase if beef is a normal good and the demand for rice to decrease if rice is an inferior good.
Normal goods are goods whose demand increase with the increase in income of consumer, however, demand decreases with the decrease in the income of consumer as we know Income is a key factor, which affect the demand of goods and services. Examples of Normal goods are Beef, Pizza, etc.
Inferior goods are goods whoes demand decreases with the increase in income of consumer, however, demand increases with the decrease in the income of consumer. Examples of Inferior goods are Cereal, Rice, non branded noodles etc.