Find the area, if it is finite, of the region under the graph of y = 35x e * over [0,co). . . . Select the correct choice below and, if necessary, fill in the answer box to complete your choice. The area of the region is O A. . (Type an exact answer.) O B. The area is not finite. A company determines that its marginal cost, in dollars, for producing x units of a product is given by C'(x) =2940x 1, where x 2 1. Suppose that it were possible for the company to make infinitely many units of this product. What would the total cost be? . . . The total cost would be $ (Round to the nearest integer as needed.) Find the accumulated present value of an investment for which there is a perpetual continuous money flow of $3900 per year at an interest rate of 6%, compounded continuously. . . . The accumulated present value is $ (Type an integer or decimal rounded to the nearest hundredth as needed.)