Five years ago, when the relevant cost index was 125 , a nuclear centrifuge cost 22,000 The centrifuge had a capacity of separating 1750 gallons of ionized solution per hour. Today , it is desired to build a centrifuge with capacity of 3500 gallons per hour, but the cost index now is 240 Assuming a power -sizing exponent to reflect economies of scale, x, of 0.72 , use the power-sizing model to determine the cost ( expressed in today's dollars ) of the new reactor.