Train A traveled 173 miles in five hours. For Train B, y = 31.35x represents its rate of speed over the same five hours. Which train traveled at a faster rate and by what factor? (round to nearest tenth)
A) Train B by a factor of 3.2 *My answer
B) Train A by a factor of 3.2
C) Train B by a factor of 1.1
D) Train A by a factor of 1.1 *the correct answer?
Can someone explain how D is the correct answer, because I'm really confused :/