Need someone who is familiar with design and analysis of algorithm

Topics covered include: Divide-and-conquer algorithms and their analysis using recurrence relations, graph algorithms, dynamic programming, the theory of NP-completeness. Textbook: Algorithms, by Sanjoy Dasgupta, Christos Papadimitriou, and Umesh Vazirani, published by McGraw-Hill. I want help for 1 to 2 hrs regarding answering some of questions