The daily cost (in dollars) of producing LG ultra high definition televisions is given by C(X) = 9x3 10x2 + 60X + 900 where x denotes the number of thousands of televisions produced in a day. (a) Compute the average cost function, (_:(x). (b) Compute the marginal average cost function, E'(x). (c) Using the marginal average cost function, E'(x), approximate the marginal average cost when 3000 televisions have been produced