1) Walter builds birdhouses. He spends $5 on the materials for each birdhouse. He can build one in 30 minutes. He is semi-retired but earns $8 per hour at the local hardware store. He can sell a birdhouse for $20 each.
An Accountant would calculate the total profit for one birdhouse to be
A) $7 B) $12 C) $11 D) $15
2) If Farmer Brown plants no seeds on his farm, he gets no harvest. If he plants 1 bag of seeds, he gets 5 bushels of wheat. If he plants 2 bags, he gets 9 bushels. If he plants 3 bags, he gets 12 bushels. A bag of seeds costs $120, and seeds are his only cost.
Farmer browns marginal-cost curve is
A) CONSTANT B) U-SHAPED C)DECREASING D) INCREASING