Question

Randy and Carla like to walk the path

Answer 1

Answer:  18 miles

Reason:

The path is 2 miles and Randy walked it 13 times. He walked a total of 2*13 = 26 miles.

Carla walked the path 22 times, so she walked a total of 2*22 = 44 miles.

The difference of those results is 44-26 = 18 miles.

If you wanted to do the full calculation in one line, then it would be

2*22 - 2*13 = 18

or you could say

2*(22-13) = 18