Based on the information given this type of maintenance is called a maintenance release.
A maintenance release is a release which help to make correction on security issues such as threat or vulnerability without modifying or adding new features to the software.
Maintenance release help to fix or repair programming errors that occur during the software life cycle stage or programming error that occur due to mistake during the requirement stage validating process.
Software that are released often undergo a maintenance release so as detect and fix any error or bug that was detected.
Inconclusion this type of maintenance is called a maintenance release.
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Answer: c. $18,000
Explanation:
Provision for doubtful accounts estimate;
= 600,000 * 3%
= $18,000
This is the Percentage of sales method and it ignores the existing balance in the Provision for doubtful accounts using only the estimate provided.
Answer:
C) $50,000,000
Explanation:
The aggregate rent is the surplus earned by the lawyers for operating over their cost at this market equilibrium.
In the picture attached, the rent is showed graphically.
At PL=$250 per hour, the amount of demanded hours is QL=1,000,000.
The oportunity cost at a zero hours level is PL(0)=$150.
The rent can be calculated as:

The aggregate rent is $50,000,000.
Answer:
Inheritance
Explanation:
The above question highlights example of inheritance. Whenever the ownership of business is transferred from one generation to another, it can be taken as an example of inheritance in a capitalist system.
The same has happened in the above question as well. Chet Bowes who owned his own lanscapped business has now transferred the ownership to his son Josh who has recently taken charge, now it is very much clear from the question neither Josh built the company on his own now was hired on the basis of his capabilities, the transfer happened on the basis of his relationship with the owner of the company. The question shows an example of inheritance.