Textbook: Managerial Economics: A Problem Solving Approach ISBN:978-1-305-25933-1Complete the following problems from Chapters 4 and 5 in Managerial Economics: A Problem Solving Approach. For each question, write 250-500 word explanation clearly showing how you solved the problem.Chapter 4: Problems 4-2 and 4-6Chapter 5: Problems 5-4 and 5-5APA style is not required, but solid academic writing is expected.This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.