Answer: b. $30; $20; $0
Explanation:
Admission prices to Dollywood are $50 for a one-day ticket, $80 for a two-day ticket, and $100 for an annual pass. Based on these prices, the marginal cost of visiting Dollywood the second day is $30, the third day is $20, and the fourth day is $0.
The marginal cost is the extra cost per day of going to Dollywood.
Second day
Marginal cost = Second day price - First day
= 80 - 50
= $30
Third day
Marginal cost = Third day price - Second day
= 100 - 80
= $20
Fourth Day
Marginal cost = Fourth day price - third day
= 100 - 100
= $0