If t -1

(x, y) (½x, y - 5), then t(x, y)

(2x, y + 5)

(x, y + 5)

(x - ½, y + 5)

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.