Anne has a job that requires her to travel three out of every four weeks. She has an annual travel budget and can travel either by train or by plane. The airline on which she typically flies das a frequent-travel program that reduces the cose of her tickets according to the number of miles she has flown in a given year. When she reaches 25,000 miles, the airline will reduce the price of her tickects by 25 percent for the remainder of the year. when she reaches 50,000 miles, the airline will reduce the price by 50 percent for the remainder of ther year. Graph Anne's budget line with train miles on the vertical axis and plan miles on the horizontal axis.