Thoughtfully answer the questions in the article:

What impact would each of the following changes have on an airline's breakeven point $($consider each item independently$)?$

An increase in airfare $($ticket prices$)$

An increase in the price of per gallon of jet fuel

A decrease in the number of seats sold

A decrease in the total spent on jet fuel

An increase in the cost of labor contracts

How could the per gallon cost of jet fuel increase yet the total cost of jet fuel decrease for an airline?

Is jet fuel a variable, fixed, or mixed cost for an airline?