How do I do this?

A rocket (frame 8') bound for Planet X leaves Earth (frame 8') travelling at a speed [3 = 3/5. We will refer to the departure as Event 0, for which x = x' : ct : ct' = 0. After one year in the rocket (ti = 1 year), the crew realizes they have used up 10 % of their food, and they will run out in nine more years (i.e. ten years from their time of departure). They immediately send a distress signal to Earth asking for help (Event 1)' The signal travels at the speed of light. The mission control center on Earth receives the signal at time t2 (Event 2). In your answers below, express time in terms of years and distance in terms of lightyears. (D What time t4 does the emergency rocket reach the crew at Event 4 according to an observer on Earth? [lpt] Draw a spaeetime diagram in S that includes Events 3 and 4. Label the axes, the events, the worldlines and their slopes. You may add this to your diagram in part (a). [lpt] (0) Immediately upon receiving the distress signal, Earth sends a message at the speed of light saying \"Don 't worry) more food is on the way\