Airplane A traveled 1273 miles in four hours. For Airplane B, y =

621

2

x represents its rate of speed over the same four hours. Which airplane traveled at a faster rate and by what factor? (round to nearest hundredth)

A) Airplane B by a factor of 7. 75

B) Airplane A by a factor of 7. 75

C) Airplane B by a factor of 1. 02

D) Airplane A by a factor of 1. 2