There is not enough information to answer the question. To answer it, you need to know how much gas is in her gas tank and how far she needs to travel.
First, multiply 16.89 by 1.2, 0.6, and 1.0725. You should get a weird number on your calculator saying 13.042458, but just round 2 to the 4 ( 4 stays the same) and remove all the other numbers to get $13.04