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A spherical balloon with radius r inches is being inflated. The function V whose graph is sketched in the figure gives the volume of the balloon, V(t), measured in cubic inches after t seconds. At what approximate rate is the radius of the balloon changing after 4 seconds?

A spherical balloon with radius r inches is being inflated. The function V whose graph is sketched in the figure gives the volume of the balloon, V(t), measured in cubic inches after t seconds. At what approximate rate is the radius of the balloon changing after 4 seconds?

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A spherical balloon with radius r inches is being inflated. The function V whose graph is sketched in the figure gives the volume of the balloon, V ( t ) , measured in cubic inches after t seconds. At what approximate rate is the radius of the balloon changing after 4 seconds?

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