Discussion Questions must be at least 125 words in length and cited by at least

Discussion Questions must be at least 125 words in length and cited by at least 1 scholarly source. No plagiarism work must be original. for Problem I have attached the the page from the textbook so the questions mentioned (1 and 7) may be referenced. Discussion Questionsa. How Is The Concept of a Normal Return on Investment Related to the Distinction Between Business and Economic Profit? b. How would you react to a sales managers announcement that he or she has in place a marketing program to maximize sales?Problems Problem 9. With the total revenue curve of Problem 1 and the total-cost curve of problem 7 derive the total-profit function and show how the firm determines the profit maximizing level of output.