This exercise uses the population growth model. The population of the world was 7.1 billion in...
This exercise uses the population growth model.
The population of the world was 7.1 billion in 2013, and the
observed relative growth rate was 1.1% per year.
(a) Estimate how long it takes the population to double. (Round
your answer to two decimal places.)
yr
(b) Estimate how long it takes the population to triple. (Round
your answer to two decimal places.)
yr
Homework Answers
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This exercise uses the population growth model. The population of the world was 7.1 billion in...
This exercise uses the population growth model. The fox population in a certain region has a...
This exercise uses the population growth model. The fox population in a certain region has a relative growth rate of 5% per year. It is estimated that the population in 2013 was 16,000. (a) Find a function n(t) = n0ert that models the population t years after 2013. n(t) = (b) Use the function from part (a) to estimate the fox population in the year 2020. (Round your answer to the nearest whole number.) (c) After how many years will...
This exercise uses the population growth model. The count in a culture of bacteria was 400...
This exercise uses the population growth model. The count in a culture of bacteria was 400 after 2 hours and 25,600 after 6 hours. (a) What is the relative rate of growth of the bacteria population? Express your answer as a percentage. (Round your answer to the nearest whole number.) 104 % (b) What was the initial size of the culture? (Round your answer to the nearest whole number.) 200 x bacteria (c) Find a function that models the number...
The population of the world in 2010 was 25 billion and the relative growth rate was...
The population of the world in 2010 was 25 billion and the relative growth rate was estimated at 0.25 percent per year. Assuming that the world population follows an exponential growth model, find the projected world population in 2018.
This exercise uses the population growth model. A culture starts with 8100 bacteria. After 1 hour...
This exercise uses the population growth model. A culture starts with 8100 bacteria. After 1 hour the count is 10,000. (a) Find a function that models the number of bacteria n(t) after t hours. (Round your r value to three decimal places.) n(t) = (b) Find the number of bacteria after 2 hours. (Round your answer to the nearest hundred.) bacteria (C) After how many hours will the number of bacteria double? (Round your answer to one decimal place.) hr
this exercise uses the population growth model. The population of a country has SPRECALC7 4.6.007.MI. MY...
this exercise uses the population growth model. The population
of a country has
SPRECALC7 4.6.007.MI. MY NOTES This exercise uses the population growth model. The population of a country has a relative growth rate of 39 per year. The government is trying to reduce the growth rate to 2%. The population in 2011 was approximately 120 million. Find the projected population for the year 2038 for the following conditions. (Round your answers to the nearest million) (a) The relative growth...
6. 0.2/1 points | Previous Answers SCalcET8 9.4.009 My Notes Ask Your Suppose the population of the world was about 6.4 billion in 2000. Birth rates around that time ranged from 35 to 40 million per...
6. 0.2/1 points | Previous Answers SCalcET8 9.4.009 My Notes Ask Your Suppose the population of the world was about 6.4 billion in 2000. Birth rates around that time ranged from 35 to 40 million per year and death rates ranged from 15 to 20 million per year. Let's assume that the carrying capacity for world population is 20 billion (a) Write the logistic differential equation for these data. (Because the initial population is small compared to the carrying capacity,...
5.41 exercise Visual C#:How to Program (World Population Growth) World population has grown considerably over the...
5.41 exercise Visual C#:How to Program (World Population Growth) World population has grown considerably over the centuries. Continued growth could eventually challenge the limits of breathable air, drinkable water, arable cropland and other limited resources. There's evidence that growth has been slowing in recent years and that world population could peak sometime this century, then start to decline. For this exercise, research world population growth issues online. Be sure to investigate various viewpoints. Get estimates for the current world population...
2. [-75 Points] DETAILS SCALCCC4 7.5.007.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The population of...
2. [-75 Points] DETAILS SCALCCC4 7.5.007.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The population of the world was about 5.3 billion in 1990. Birth rates in the 1990s ranged from 35 to 40 million per year and death rates ranged from 15 to 20 million per year. Let's assume that the carrying capacity for world population is 100 billion. (Assume that the difference in birth and death rates is 20 million/year 0.02 billion/year.) (a) Write the logistic differential equation...
World Population Growth After its fastest rate of growth ever during the 1980s and 1990s, the...
World Population Growth After its fastest rate of growth ever during the 1980s and 1990s, the rate of growth of world population is expected to slow dramatically in twenty-first century. The function G() - 1.58 -0.2136 gives the projected annual average percent population growth per decade in theith decade, with corresponding to 2000 (a) What will the projected annual average population growth rate be in 2030 ( 47(Round your answer to two decimal places.) % per decade 17(Round your answer...
3. The population of the Earth is approximately 7.1 billion people and is growing at an...
3. The population of the Earth is approximately 7.1 billion
people and is growing at an annual rate of 1.3 % . a ) Find the
approximate and exact doubling time of the Earth’s population .
Show your work , round to 1 decimal place , and label your answer .
Approximate : Exact : b ) Use the approximate doubling time to find
the population 20 years from now . Show your work , round to 1
decimal place...
This exercise uses the population growth model. The count in a culture of bacteria was 400 after 2 hours and 25,600 after 6 hours. (a) What is the relative rate of growth of the bacteria population? Express your answer as a percentage. (Round your answer to the nearest whole number.) 104 % (b) What was the initial size of the culture? (Round your answer to the nearest whole number.) 200 x bacteria (c) Find a function that models the number...
This exercise uses the population growth model. A culture starts with 8100 bacteria. After 1 hour the count is 10,000. (a) Find a function that models the number of bacteria n(t) after t hours. (Round your r value to three decimal places.) n(t) = (b) Find the number of bacteria after 2 hours. (Round your answer to the nearest hundred.) bacteria (C) After how many hours will the number of bacteria double? (Round your answer to one decimal place.) hr
this exercise uses the population growth model. The population
of a country has
SPRECALC7 4.6.007.MI. MY NOTES This exercise uses the population growth model. The population of a country has a relative growth rate of 39 per year. The government is trying to reduce the growth rate to 2%. The population in 2011 was approximately 120 million. Find the projected population for the year 2038 for the following conditions. (Round your answers to the nearest million) (a) The relative growth...
6. 0.2/1 points | Previous Answers SCalcET8 9.4.009 My Notes Ask Your Suppose the population of the world was about 6.4 billion in 2000. Birth rates around that time ranged from 35 to 40 million per year and death rates ranged from 15 to 20 million per year. Let's assume that the carrying capacity for world population is 20 billion (a) Write the logistic differential equation for these data. (Because the initial population is small compared to the carrying capacity,...
2. [-75 Points] DETAILS SCALCCC4 7.5.007.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The population of the world was about 5.3 billion in 1990. Birth rates in the 1990s ranged from 35 to 40 million per year and death rates ranged from 15 to 20 million per year. Let's assume that the carrying capacity for world population is 100 billion. (Assume that the difference in birth and death rates is 20 million/year 0.02 billion/year.) (a) Write the logistic differential equation...
World Population Growth After its fastest rate of growth ever during the 1980s and 1990s, the rate of growth of world population is expected to slow dramatically in twenty-first century. The function G() - 1.58 -0.2136 gives the projected annual average percent population growth per decade in theith decade, with corresponding to 2000 (a) What will the projected annual average population growth rate be in 2030 ( 47(Round your answer to two decimal places.) % per decade 17(Round your answer...
3. The population of the Earth is approximately 7.1 billion
people and is growing at an annual rate of 1.3 % . a ) Find the
approximate and exact doubling time of the Earth’s population .
Show your work , round to 1 decimal place , and label your answer .
Approximate : Exact : b ) Use the approximate doubling time to find
the population 20 years from now . Show your work , round to 1
decimal place...
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