3 Questions, 2 Paragraphs Each

I am in the course of beginning philosophy and need to answer three questions. Each question needs to have 2 or more paragraphs.

1. What do Thrasymachus, Glaucon, and Adeimantus mean by injustice? Is injustice simply acting solely for ones own interests or something more (Republic, 343b-344c, 348b-e, 357a-367e)?

2. What is Plato’s attitude toward wealth and material prosperity (Republic, 341c-346d, 368e-373e,415d-423b)? 

3. Plato gives three additional conceptions of justice in book IV of the republic. First, detail Plato’s these three conceptions, i.e. job-funtional justice, justice in the soul, and “ordinary”, conventional justice ( rRpublic, 433a-434d, 441c-444e & 442d-443b). Secondly explain how they casually support and or/ logically entail one another.