Which class has 28% 28% boys? clear check class a: 3 3 out of 30 30 class b: 28 28 out of 40 40 class c: 1 1 out of 28 28 class d: 14 14 out of 50 50

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.