Please answer the questions. Do not just tell me how to do them. Thanks so much:)

(b) Use a data table to vary demand from 1,000 to 6,000 in increments of 200 to test the sensitivity of profit to demand. Breakeven occurs where profit goes from a negative to a positive value, that is, breakeven is where total revenue = total cost vieldino a profit of zero. In which interval of demand does breakeven occur? (i) Breakeven appears in the interval of 3,600 to 3,800 copies. (ii) Breakeven appears in the interval of 4,000 to 4,200 copies. (iii) Breakeven appears in the interval of 4,200 to 4,400 copies. (iv) Breakeven appears in the interval of 4,400 to 4,600 coples. (c) Use Goal Seek to determine the access price per copy that the publisher must charge to break even with a demand of 3,500 coples. If required, ridnd your answer to two decimal places. (d) Consider the following scenarios: For each of these scenario5, the fixed cost remains $160,000, Use Scenario Manager to generate a summary report that gives the profit for each of these scenarios. Which scenario yields the highest profit? Which scenario yilds the lowest profit? yelds the hiphest profic of yields the fowest: profit of s