For a certain product, cost C and revenue R are given as follows, where x is the number of units sold in hundreds Cost: C2 = x2 + 100 VX +50 Revenue: 895(x-6)2 + 29R2 = 24,389 dC a. Find the marginal cost at x = 6 dx The marginal cost is estimated to be $ (Do not round until the final answer. Then round to the nearest hundredth as needed.)