Observer S reports that an event occurred on the x

Observer S reports that an event occurred on the x axis of his reference frame at x = 3.00 x 108 m at time t = 2.50 s. Observer S\' and her frame are moving in the positive direction of the x axis at a speed of 0.400c. Further, x = x\' = 0 at t = t\' = 0. What are the
(a) Spatial and
(b) Temporal coordinate of the event according to S\'? If S\' were, instead, moving in the negative direction of the x axis, what would be the
(c) Spatial and
(d) Temporal coordinate of the event according to S\'?