Final answer:
Annie still has to travel 33/56 parts of her trip to reach her destination.
Step-by-step explanation:
To find out what part of the trip Annie still has to travel, we need to find the total parts of the trip she has completed. In the first hour, Annie traveled 2/7 parts of her trip. In the second hour, she traveled 1/8 parts. So, the total parts traveled in the first two hours are:
2/7 + 1/8 = 16/56 + 7/56 = 23/56
To find out what part of the trip Annie still has to travel, we subtract the parts she has completed from the total trip:
1 - 23/56 = 56/56 - 23/56 = 33/56