A vacationer sits all day on the corner of a pier in Boston Harbor and notices that at 9 am, when the water level is at its lowest, the water's depth is 1.5 feet. At 4 pm, the water has risen to its maximum depth of 11.5 feet. If the depth of the water level varies periodically, let
be the formula for the depth of the water, in feet, as a function of time t, in hours past 9 am. What is the period of the graph of ?

Question

A vacationer sits all day on the corner of a pier in Boston Harbor and notices that at 9 am, when the water level is at its lowest, the water's depth is 1.5 feet. At 4 pm, the water has risen to its maximum depth of 11.5 feet. If the depth of the water level varies periodically, let   
be the formula for the depth of the water, in feet, as a function of time t, in hours past 9 am. What is the period of the graph of  ?

Quizplus · Accepted Answer

The Answer of A vacationer sits all day on the corner of a pier in Boston Harbor and notices that at 9 am, when the water level is at its lowest, the water's depth is 1.5 feet. At 4 pm, the water has risen to its maximum depth of 11.5 feet. If the depth of the water level varies periodically, let   
be the formula for the depth of the water, in feet, as a function of time t, in hours past 9 am. What is the period of the graph of  ?

A Vacationer Sits All Day on the Corner of a Pier