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Fill in the blank so that the resulting statement is true. A function expresses an object's position, s(t), in terms of time, t. The average velocity of the object from t, = 7 As seconds to to = 9 seconds is At . . . A function expresses an object's position, s(t), in terms of time, t. The average velocity of the object from t, = 7 seconds As to to = 9 seconds is At