Rachel is riding a bike while Tamir is riding his skateboard, both at constant speeds. Rachel’s distance traveled with respect to time is represented by the equation 

, where 

 is the distance in meters and 

 is the time in seconds. Tamir’s distance traveled with respect to time is shown in the graph. Who travels faster?
 A) Rachel travels faster.
 B) Tamir travels faster.
 C) Rachel and Tamir travel at the same speed.