1) Strontium-90 is a radioactive material that experiences exponential decay. A scientist begins with 500 grams of stron

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1) Strontium-90 is a radioactive material that experiences exponential decay. A scientist begins with 500 grams of stron

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1) Strontium-90 is a radioactive material that experiencesexponential decay. A scientist begins with 500 grams ofstrontium-90.
a) Using A(t) = A0e kt and knowing that 442.57 grams ofstrontium-90 is left after t years, solve for the decay rate, k. Donot round, this should be an exact expression. [2pts]
b) Use this decay rate to build a function modeling the amountof Strontium-90 that is left after t years. [2pts]
c) Calculate the half-life of strontium-90 accurate to thethousandths. [2pts
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