Jane moves at v = -0.3c relative to Fred.       gamma = 



                                      general                in this case
                                   -----------------       -------------------
      Lorentz transforms:    x'  =  gamma * (x - v t)   =  gamma*(x + 0.3 t)

                                                  vx
                             t'  =  gamma * (t - ----)  =  gamma*(t + 0.3 x)
                                                  c^2