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A scientist is measuring a material that she thinks may be radioactive. She begins with 300 grams, and measures that after 4 hours, she has

A scientist is measuring a material that she thinks may be radioactive. She begins with 300 grams, and measures that after 4 hours, she has 240 grams remaining.

a) Find an exponential model of the formthat will model this material.

b) Find the half-life of the material.

c) Determine how much will be left after 1 day.

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