A particular computing company nds that its weekly profit, in dollars, from the production and sale of x laptop computers is P(x) = 0.002x3 0.2x2 + 700x 900. Currently the company builds and sells 6 laptops weekly. a) What is the current weekly prot? b) How much prot would be lost if production and sales dropped to 5 laptops weekly? c) What is the marginal prot when x = 6? d) Use the answer from part (a) and (c) to estimate the prot resulting from the production and sale of 7 laptops weekly. a) The current weekly prot is $|:|. (Round to the nearest cent as needed.)