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Can you help me answer this questions ASAP please! Question 3 (5 points) A radioactive substance's rate of decay is given by Q' (t) =

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Can you help me answer this questions ASAP please!

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Question 3 (5 points) A radioactive substance's rate of decay is given by Q' (t) = - 80 e- 0.4 t grams per week, where t is in weeks. Find a general expression for the quantity Q(t) at any time t.Question 4 (5 points) 2 e 2x e 2x + 3 dacQuestion 5 (5 points) Evaluate the integral by interpreting it in terms of areas. 1 + V16 - x2 ) dx

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