ambeebambie
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- Mar 26, 2014
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questions like:
A town in the mid west has been experiencing a steady population decline of 6.75 % per year for the past decade. If there were 40450 residents in the year 2011 and the trend continues, what will the population be in the year 2028?
Round your answer to the nearest person.
Bacteria X has a growth rate of 180 % per hour. Some amount of bacteria X are accidentally introduced into some egg salad. Four hours after contamination, there were 25,000 bacteria X in the egg salad.
Find the initial number of bacteria X introduced into the egg salad:
bacteria
Estimate the number of bacteria in the food 5 hours after contamination.
bacteria
A city had a population of 6,537 at the begining of 1942 and has been growing at 8.9% per year since then. (a) Find the size of the city at the beginning of 1980.
Answer:
(b) During what year will the population of the city reach 16,982,321 ?
Answer:
A particular pain relieving medicine has a decay rate of 25 % per hour. A patient was given a dose of the medicine 5 hours ago and there is currently 58 milligrams of the medicine in the patients bloodstream. What was the original dose of the medicine?
milligrams
How long will the patient need to wait for there to be less than 25% of the original dose of the medicine left in their bloodstream? Express your answer as a decimal to the nearest tenth of an hour.
hours
Goods costing $10.82 at the beginning of the year 1975 cost $249.54 at the beginning of the year 2003. Find the average annual inflation rate over this time period. Express your answer the nearest thousandth of a percent.
A bacteria has a doubling period of 8 days. If there are 3150 bacteria present now, how many will there be in 30 days?
First we must find the daily growth rate (Round this to four decimal places).
The growth rate is .
Then we use this rate to answer the question.
There will be bacteria
A particular radioactive isotope decays from 260 milligrams (mg) to 226.2 mg in 7 days. Find the half life of the isotope.
Your answer is days.
Find the amount if $500 is invested at 11% compounded monthly for 7 months.
Amount = $
An investment pays simple interest, and doubles in 13 years. What is the interest rate?
Answer = percent.
questions like:
A town in the mid west has been experiencing a steady population decline of 6.75 % per year for the past decade. If there were 40450 residents in the year 2011 and the trend continues, what will the population be in the year 2028?
Round your answer to the nearest person.
Bacteria X has a growth rate of 180 % per hour. Some amount of bacteria X are accidentally introduced into some egg salad. Four hours after contamination, there were 25,000 bacteria X in the egg salad.
Find the initial number of bacteria X introduced into the egg salad:
bacteria
Estimate the number of bacteria in the food 5 hours after contamination.
bacteria
A city had a population of 6,537 at the begining of 1942 and has been growing at 8.9% per year since then. (a) Find the size of the city at the beginning of 1980.
Answer:
(b) During what year will the population of the city reach 16,982,321 ?
Answer:
A particular pain relieving medicine has a decay rate of 25 % per hour. A patient was given a dose of the medicine 5 hours ago and there is currently 58 milligrams of the medicine in the patients bloodstream. What was the original dose of the medicine?
milligrams
How long will the patient need to wait for there to be less than 25% of the original dose of the medicine left in their bloodstream? Express your answer as a decimal to the nearest tenth of an hour.
hours
Goods costing $10.82 at the beginning of the year 1975 cost $249.54 at the beginning of the year 2003. Find the average annual inflation rate over this time period. Express your answer the nearest thousandth of a percent.
A bacteria has a doubling period of 8 days. If there are 3150 bacteria present now, how many will there be in 30 days?
First we must find the daily growth rate (Round this to four decimal places).
The growth rate is .
Then we use this rate to answer the question.
There will be bacteria
A particular radioactive isotope decays from 260 milligrams (mg) to 226.2 mg in 7 days. Find the half life of the isotope.
Your answer is days.
Find the amount if $500 is invested at 11% compounded monthly for 7 months.
Amount = $
An investment pays simple interest, and doubles in 13 years. What is the interest rate?
Answer = percent.
Last edited:
