Question: Preferably type out the answer (sometimes it's hard to understand a handwriting). ONLY NEED ANSWERS, NO EXPLANATION REQUIRED 1. A tumor is injected with 2.5

Preferably type out the answer (sometimes it's hard to understand a handwriting). ONLY NEED ANSWERS, NO EXPLANATION REQUIRED

A tumor is injected with 2.5 grams of Iodine, which has a decay rate of 1.85 % per day. Write an exponential model representing the amount of Iodine remaining in the tumor after t days. Find the amount of Iodine that would remain in the tumor after 40 days. Round to the nearest tenth of a gram. W\": Remaining after 40 days: grams A research student is working with a culture of bacteria that doubles in size every twenty minutes. The initial population count was 5 bacteria. Write an exponential equation representing this situation. Use t to represent hours. If you use the exponential function Poe\As an isotope of lead, 2Pb, has a halflife of 5.9 hours. How many hours ago was there 30 % more of the substance? Round your answer to 2 decimal places.Only 30 % of the carbon-14 in a wooden bowl remains. How old is the bowl (rounded to the nearest hundred years, and use 5700 years as carbon-14's half life)

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