Question: A certain substance decomposes according to a continuous exponential decay model. To begin an experiment, the initial amount of the substance is 250 kg. After

A certain substance decomposes according to a continuous exponential decay model. To begin an experiment, the initial amount of the substance is 250 kg. After 8 hours, 110 kg of the substance is left. (a) Let / be the time (in hours) since the beginning of the experiment, OInO and let y be the amount of the substance (in kg) at time z. Write a formula relating y to f. X 5 Use exact expressions to fill in the missing parts of the formula. Do not use approximations. y = =D: (b) How much of the substance is left 23 hours after the beginning of the experiment? Do not round any intermediate computations, and round your answer to the nearest whole number

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