Ee331 Circuit Theory answers the Questions emergency?

Can someone help me? In the attached file to resolve that one or more of the questions? When I am in a situation very difficult and very few

I do not know the answers to the following questions (the problem statement?? relevant equations...) Because I am a former student at the university and 5 years ago, I saw no need to solve the questions again, I do not remember a thing
1. The problem statement, all variables and given/known data



2. Relevant equations



3. The attempt at a solution
1. The problem statement, all variables and given/known data



2. Relevant equations



3. The attempt at a solution
1. The problem statement, all variables and given/known data



2. Relevant equations



3. The attempt at a solution
1. The problem statement, all variables and given/known data



2. Relevant equations



3. The attempt at a solution
 

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