Which of the following is the complete list of roots for the polynomial function

a–3 + 2i, –3 – 2i
b–2, –4
c–2, –4, –3 + 2i, –3 – 2i
d–2, –4, –3 + 2i, 3 + 2i

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.