Question: Please finish quick: 3. A weather balloon is rising vertically. After t hours, its distance above the ground, measured in kilometres, is given by the

Please finish quick: 3. A weather balloon is rising vertically. After

Please finish quick:

3. A weather balloon is rising vertically. After t hours, its distance above the ground, measured in kilometres, is given by the formula $(t) = 8tt',0s t s 5. Determine the velocity at t = 3 h. [6 A]

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