6.) Emma Tsou's sandwich shop, is located on a busy corner near many other businesses. The shop's busiest time is during the mid-day period. Rent for the location is $906.00 per month and wages amount to $2,432.00 per month. Variable costs consist of supplies and sandwich ingredients that cost $2.20 per sub sandwich. The subs are to be sold at a price of $5.69 each. Answer each of the following independent questions. a) How many sandwiches must the shop sell to break-even? (Round up to the next whole unit.) b.) If the shop increases variable costs by $0.20 (20 cents) per sandwich, how many sandwiches must it sell to break even? (Round up to the next whole unit.) c.) If the rent increases by 10%, what would the profit be if the shop sold 1600 sandwiches? d.) If the sandwich price were reduced by $0.20 (20 cents), how many sandwiches must the shop sell to make $1,000.00 (Round up to the next whole unit)