The profile of the cables on a suspension bridge may be modeled by a parabola. The central span of the bridge is 1290 m long and 154 m high. The parabola y =0.00037x gives a good fit to the shape of the cables, where x s645, and x and y are measured in meters. Approximate the length of the cables that stretch between the tops of the two towers. 154 m 1290 m The length of the cables is approximatelyr meters, (Round to the nearest whole number.)

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