For each of the following situations, explain how a change in the stated "price" is likely to affect your incentives regarding the stated decision.

a. the price of ski-lift tickets; your decision to purchase a ski-lift ticket

b. the hourly wage for your weekend job; the decision to not work and go skiing on the weekend instead

c. the fine for speeding; your decision to speed on the highway

d. the weight of your course grade attached to an assignment; your decision to work hard on that assignment