Hooke's law states that the distance a spring stretches varies directly as the weight on the spring. Let d represent the distance (in inches) the spring stretches, let wrepresent the weight (in pounds) on the spring, and let k be the constant of proportionality. Write an equation that relates d to w. d =     A weight of 50 pounds stretches a spring 8 inches.     Use the equation that relates d to w and the known information to find k. k =   How far (in inches) will a weight of 120 pounds stretch the spring? in

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