Suppose the quantity (in grams) of a radioactive substance present at time t is Q(t) = 38,416 (7-0.3t), where t is measured in months. a. How much will be present in 4 months? b. How long will it take to reduce the substance to 16 grams? There will be grams of the substance present in 4 months. (Round to the nearest gram as needed.) SEP a ))

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A: we have to do as per the question.

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A: Given.

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A: Solve the given function

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A: find the inverse of matrix= 30   04

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A: Topic:- function and derivatives

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A: we will do as per the question.

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A: Let's solve given differential equation.

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A: Here is the solution:

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A: The given matrix is A= 1 0 5 1        0 1 -1 5       2 5 1 0      0 0 4 1.

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A: Discontinuity of f can be removed by factorisation of the numerator

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A: Simplification