Airplane trips when airlines’ on-time per… Show more Describe the probable shifts in the demand curves for: a. Airplane trips when airlines’ on-time performance improves b. Automobiles when airplane fares increase c. Automobiles when gasonline prices increase d. Electricity when the average temperature in the US rises during a particular year (Note: The demand curve for electricity in Maine and the demand curve for electricity in Florida should respond in different ways. Why?) • Show less