5 The data provided is that for the depth of water in Cokato Creek as measured during a day long rainstorm D t is a differentiable function of time t t hour 0 4 8 12 16 20 24 D t in 32 36 38 37 35 33 32 a Find the approximate value of D 16 Indicate units of measure and explain its meaning in context of the problem 4 points b Cokato High School math students have determined that the function D t 35 3cos models the depth of the water during such rain events D t represents the depth of the creek in inches after t hours Use your graphing calculator to find D 16 and explain the meaning of your answer with appropriate units in context of the problem 4 points