Originally Posted by

**needmathshelp** Hey can anyone help me with this Q

Mr Johnston is a very keen fisherman who will go fishing at any time of the day or night. He requires 1.5 metres of water at the boat ramp (ie. 1.5 m above the mean sea level) to launch his boat the "Periodic Function". The next high tide occurs at 2am, at a height of 2.8m above the mean sea level

a) Find the times in teh first 24 hours after 2am when he is able to launch his boat

b)What assumptions can be made in coming up with this answer?

thanx heaps