Solve: 4 - 2(2x - 7) = -6. a) -6 b) -5 c) -3 d) 6

Martha is training for a duathlon, which includes biking and running. she knows that yesterday she covered a total distance of over 55.5 miles in more than than 4.5 hours of training. martha runs at a speed of 6 mph and bikes at a rate of 15.5 mph.