Suppose a spherical balloon is being filled with air so that its' volume and radius increase. t time (in seconds) V = volume of the balloon at time t (in cm) T = radius of the balloon at time t (in cm) Restate the following sentence in terms of the above variables: "How fast is the radius changing when the radius is 7 cm, if the balloon is being filled with air at a constant rate of 3 cm /s?" (Note: You do not need to solve the problem. Only determine what the question is asking, mathematically.) O What is AP if we know that r = 7 and " = 3? dt dt O What is d if we know that r = 7 and V = 3? O What is when r = 7, given that AP dt = 3? dt O What is given that r =7 and AP = 3 ? dr O What is when r = 7, if = -3? 血也

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