Question

In 1979 the Wincom river was 33 feet below the bridge. Because of silt build-up in the river bottom, the

river was only 12 feet below the bridge by 1986. Write an equation for the distance of the river from the
bridge, d, with t = 0 representing 1979. If the silt build-up continues at the same rate, what year will the
river reach the bridge?

Answer 1

Answer: d = 40 - 5/2t; 1995

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