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Monthly rates for water used per 100ft^3 in Baton Rouge are tabulated below. In Dec, 50 hundred ft^3 water was used; How much you should pay for your water bill What is the average cost per 100 ft^3 What is the marginal cost What is the marginal cost if in July, 250 hundred ft^3 is used 8 years ago, when the relevant cost index was 125, a nuclear centrifuge cost $40,000. The centrifuge had a capacity of separating 1500 gallons of ionized solution per hour. Today, it is desire to build a centrifuge with capacity of 4500 gallons per hour, but the cost index now is 700. Assuming a power-sizing exponent to reflect economies of scale,x, of 0.8, use the proper model to determine the approximate cost of the new reactor