A sample of radioactive material decays over time measured in hours with decay constant 2 The graph of the exponential function

Question

A sample of radioactive material decays over time measured in hours with decay constant 2 The graph of the exponential function y P t shown on the right 5 gives the number of grams remaining after t hours a How much was remaining after 1 hour b Approximate the half life of the material c How fast was the sample decaying after 6 hours d When was the sample decaying at the rate of 2 grams per hour a After 1 hour there were 7 g remaining Round to the nearest integer as needed b The half life at approximately 3 5 hrs Round to one decimal place as needed c The sample was decaying at a rate of 0 5 grams per hour Round to one decimal place as needed d The sample was decaying at the rate of 2 grams per hour after Round to the nearest integer as needed hrs Ay 9 7 5 3 1

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