Time left V.53.00 The demand in dollars for pens is p = 5240 - 2q and the total cost function in dollars is C(q) = 0.3q2 - 55q + 450, where q represents the number of pens. Which of the following represents a function of the average cost c ? O a. 0.3q - 55 O b. 0.3q - 55 + 330 O c. 0.3q - 55 + 450 O d. 0.3q 55q2 3 2 + 450qGiven y = 2 er (@ + 1)2, use logarithmic differentiation to find dy O a. + 2 T er (x + 1)2 O b. 2 alex (x + 1)2 O c. +1+71 per (x + 1)2 O d. +1+ 1 xe (x + 1)2