Asked by alex
5. At 2pm the number of bacteria in a colony was 100, by 4pm it was 4000. Write an exponential function to model the population y of bacteria x hours after 2pm.
6. Using the information in problem 5, how many bacteria were there at 7pm that day?
7. Kaplan Corporation bought a computer for $1500. It is expected to depreciate at a rate of 22% per year. What will the value of the computer be in 2 years?
8. Radioactive iodine is used to determine the health of the thyroid gland. It decays according to the equation y = ae-0.0856t, where t is in days. Find the half-life of this substance.
9. An anthropologist finds there is so little remaining Carbon-14 in a prehistoric bone that instruments cannot measure it. This means that there is less than 0.5% of the amount of Carbon-14 the bones would have contained when the person was alive. How long ago did the person die?
10. The Mendes family bought a new house 10 years ago for $120,000. The house is now worth $191,000. Assuming a steady rate of growth, what was the yearly rate of appreciation?
6. Using the information in problem 5, how many bacteria were there at 7pm that day?
7. Kaplan Corporation bought a computer for $1500. It is expected to depreciate at a rate of 22% per year. What will the value of the computer be in 2 years?
8. Radioactive iodine is used to determine the health of the thyroid gland. It decays according to the equation y = ae-0.0856t, where t is in days. Find the half-life of this substance.
9. An anthropologist finds there is so little remaining Carbon-14 in a prehistoric bone that instruments cannot measure it. This means that there is less than 0.5% of the amount of Carbon-14 the bones would have contained when the person was alive. How long ago did the person die?
10. The Mendes family bought a new house 10 years ago for $120,000. The house is now worth $191,000. Assuming a steady rate of growth, what was the yearly rate of appreciation?
Answers
Answered by
DrBob222
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