The number of milligrams D (h) of a certain drug that is in a patient's bloodstream h hours after the drug is injected is given by the following function. -0.4h D (h) = 30e %3D When the number of milligrams reaches 11, the drug is to be injected again. How much time is needed between injections? Round your answer to the nearest tenth, and do not round any intermediate computations.

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A: Let's find.

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A: we can solve this as follows:

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A: The given problem is solved below in detail.

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A: The plane that passes through the point,       -2,1,1, 0,4,7 and 1,0,-1

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A: From the given graph, we have to find the limit at x=5

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A: This question can be solved using the concept of length of arc of curve in parametric form.

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A: I am attaching image so that you understand each and every step.

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