Bill has just returned from a duck hunting trip. He has brought home eight ducks. Bill's friend, John, disapproves of duck hunting, and to discourage Bill from further hunting, John has presented him with the following cost estimate per duck:

Camper and equipment:
Cost, $17,000; usable for eight seasons; 14 hunting trips per season	$	152
Travel expense (pickup truck):
100 miles at $0.42 per mile (gas, oil, and tires $0.28 per mile; depreciation and insurance $0.14 per mile)		42
Shotgun shells (two boxes)		25
Boat:
Cost, $2,720, usable for eight seasons; 14 hunting trips per season		24
Hunting license:
Cost, $40 for the season; 14 hunting trips per season		3
Money lost playing poker:
Loss, $22 (Bill plays poker every weekend)		22
Bottle of whiskey:
Cost, $25 (used to ward off the cold)		25
Total cost	$	293
Cost per duck ($293/8 ducks)	$	37

1. Assuming that the duck hunting trip Bill has just completed is typical, what costs are relevant to a decision as to whether Bill should go duck hunting again this season?

2. Suppose that Bill gets lucky on his next hunting trip and shoots 14 ducks in the amount of shotgun shells he used on his previous hunting trip to bag 8 ducks. How much would it have cost him to shoot the last six ducks?