A lake fishing map is laid out on a coordinate plane with each unit equal to 1 mile. The boat is launched from the point (7, 0) and goes to point (7, −7) to fish. From there, the boat travels to (0, −7) to fish and then goes back to the launch point.

Determine the total number of miles traveled. Round to the nearest whole number.

10 miles
12 miles
14 miles
24 miles