Please answer (a), (b), & (c) if possible Thank You!

estimated to be $9 per book. The publisher plans to sell single-user access to the book for $45. $ (b) Use Goal Seek to calculate the price (in dollars) that results in breakeven. (Round your answer to the nearest cent.) $ (c) Use a data table that varies price from $50 to $400 in increments of $25 to find the price (in dollars) that maximizes profit. $