Great Cruiseline offers nightly dinner cruisos departing from several cites on the East Coast of the United States inclucting Charleston, Baltimoro, and Alexandita Dinner cruise tickets sell for $50 per passenger. Great Cruiseline's variable cost of prowiding the dinner is $20 per passenger, and the foced cost of operating the vessels (deprociation, salarios, docking fees, and other expenses) is $210,000 per month. The company's relovant range extends to 15,000 monthly paseongers. The breakeven units are 7,000 tickets sold. If Great Cruiseline sells 8,750 dinner cruises, compute the margin of safely a. in units (dinner cruise ticket5). b. in sales dolitars, c. as a percentage of sales. a. If Great Cruiseline sells 8.750 dinner crises, compute the margin of salety in units (dirner cruise tickets). Begin by dotermining the formula, then compute the margin of safoty in units (dinner cruise tickets). b. If Great Cruiseline sel's 8,750 dinner cruises, compute the margin of salety in sales dollars. Bogin by dotermining the formula, then computo the margin of safety in solos dollars. c. If Great Cruiseline solis 8,750 dnner cruses, compute the margin of safety as a percontago of tales