1.

. Due to the tide. the depth of water at a dock rises and falls overthe course of the day. The depth can be modeled by the following equation: m) = 4mit) + 7. If you want to tie up your boat at the dock, the water needs to be nine feet deep, It the time is currently t = 0, at what time will you be able to tie up your boat? Choose the closest time. Simplify the following expression by writing it in terms of sine or cosine only: 1 csc( ) . cot (2) =