Q12 on the summative had an error which has been corrected now. Here is the correct version 12. The water depth in a harbour is 8m at low tide and 20m at high tide. One cycle is completed every 12 hours. Remember to include proper units (a) Find TWO equations for the water depth, x metres, as a function of the time, t, hours, at high tide, which occurred at 03:00 Ke Ce (b) Sketch a graph to represent the function for a 24 hour period. Label clearly. Begin the graph at the highest tide