(Java) Please describe how API's can be created using abstract classes, interfaces and regular classes.

What are some of the advantages of creating abstract classes? Are there any potential downsides to using parent classes and subclasses?

(4) Assume, you will receive rent payments over a time period of 88 years. For the first 44 years, you will receive a rent of $444 at the end of each year. For the next 44 years thereafter you will receive $222 at the beginning of each year.
Assuming a discount rate of 4% calculate the net present value of this income stream. (a) Employing the equation for identical payments over a limited time period, show how you would alter this equation applied to this problem. Show the abstract formula.

(b) Now, calculate the NPV of the payments.

Write an abstract on the relevance and impact of ESG factors especially social factors on the sports industry for example MLB.

management

Mention and explain types of dervative?

mention the kinds of academic essay

1. How is economics different from other theoretical fields of social science like psychology and practical fields like business?
2. Why do you think you need to take this course?
3. What are the distinguishing features between macroeconomics and microeconomics?
4. Theoretical fields like economics employ abstract models. Why is better to employ abstract models instead of trying the understand the subject as a whole?
5. Economies are organized based on the modes of resource allocation and resource ownership. Which economic systems perform better when it comes to fairness and efficiency