13.11 Review all rules in Appendix A about punctuation, number usage, and grammar. Then, rewrite each sentence to make all needed corrections.

A. Frequent flier programs have traditionally awarded miles based on the number of miles in a flight not on the price of air tickets.

B. Some airlines are now changing these loyalty programs, to reward miles based on ticket prices which makes many bargain hunters upset.

C. These airlines say that dollars spent is a better indicator of loyalty than miles traveled but many long time loyalty program members disagree.

D. Some airlines have all ready expanded the options, for members to use their miles.

E. In addition to using miles to purchase flights they will now be able to purchase extra legroom, check in baggage and even in flight food and services.

F. Overall these policies are aimed at rewarding travelers who spend more money on flights and in flight services.

G. Most travelers, who purchase primarily based on ticket prices, are disappointed with the new changes, because they reduce the benefits of getting the best deal.

H. Many airlines now sell annual, checked baggage subscriptions for around 300 to 400 dollars.

I. Airlines brought in about forty billion dollars last year in baggage fees, most airlines are using these fees to significantly improve profitability.

J. Many budget airlines make more money from fees, than they do from ticket prices.