Question

An animal population currently has 7400 members and is reproducing at the rate R(t) = 2290...

An animal population currently has 7400 members and is reproducing at the rate R(t) = 2290 + 40t members/year. The proportion of members that survive after t years is given by S(t) = 1/(t + 1)

(a) How many of the original members survive 4 years?

(b) How many new members are added during the next 4 years?

(c) Explain why the animal population 4 years from now is not the same as the sum of your answers from parts (a) and (b)

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A magazine currently has 8400 subscribers for its online web version. It is adding members at...
A magazine currently has 8400 subscribers for its online web version. It is adding members at the rate of R(t) = 140e0.03t subscribers per month. If the proportion of members who remain subscribed t months from now is S(t) = e−0.06t, how many online subscribers will the magazine have three years from now? (Round your answer to the nearest integer.) subscribers
A population of insects currently numbers 22,800 and is increasing at a rate of R(t) =...
A population of insects currently numbers 22,800 and is increasing at a rate of R(t) = 1225e^0.14t insects/week. If the survival function for the insects is S(t) = e^−0.2t, where t is measured in weeks, how many insects are there after 12 weeks?
1. There are currently 3800 birds of a particular species in a national park and their...
1. There are currently 3800 birds of a particular species in a national park and their number is increasing at a rate of R(t) = 527e0.06t birds per year. If the proportion of birds that survive t years is given by S(t) = e−0.1t, what do you predict the bird population will be ten years from now? (Round your answer to the nearest integer.) ____ birds . 2. Sterile fruit flies are used in an experiment where the proportion that...
Suppose that a population of deer is experiencing exponential growth, with r= 1.5 individuals/year. If the...
Suppose that a population of deer is experiencing exponential growth, with r= 1.5 individuals/year. If the population size now is 4, how many deer will be added to the population in the next year? If necessary, truncate your answer to a whole number. Show your work. Suppose that a population of deer is experiencing exponential growth, with r= 0.89 individuals/year. If the starting population size was 8, how many deer will be in the population after 5 years? If necessary,...
(1 point) Suppose P=f(t)P=f(t) is the population (in thousands) of town tt years after 1990, and...
(1 point) Suppose P=f(t)P=f(t) is the population (in thousands) of town tt years after 1990, and that f(4)=14f(4)=14 and f(12)=21f(12)=21, (a) Find a formula for f(t)f(t) assuming ff is exponential: P=f(t)=P=f(t)= (b) Find a formula for f−1(P)=f−1(P)= (c) Evaluate f(30)=f(30)=  (Round your answer to the nearest whole number.) (d) f−1(30)=f−1(30)=  (Round your answer to at least one decimal place.) Write out sentences to explain the practical meaning of your answers to parts (c) and (d). Consider the seven numbered statements in the...
A population of arctic birds has migrated farther north than previous years. The new location is...
A population of arctic birds has migrated farther north than previous years. The new location is good for the birds, and the population exhibits exponential growth. As time passes, the population begins to level out and maintain a steady population size. (10 points) Suppose that researchers say ? > 1. What does this mean? (1 point) In the first year, there are 200 births from an original population size of 2000. There are also 100 deaths, 10 emmigrants, and 20...
When interest is compounded continuously, the amount of money increases at a rate proportional to the...
When interest is compounded continuously, the amount of money increases at a rate proportional to the amount S present at time t, that is, dS/dt = rS, where r is the annual rate of interest. (a) Find the amount of money accrued at the end of 8 years when $5000 is deposited in a savings account drawing 5 3 4 % annual interest compounded continuously. (Round your answer to the nearest cent.) $ (b) In how many years will the...
When interest is compounded continuously, the amount of money increases at a rate proportional to the...
When interest is compounded continuously, the amount of money increases at a rate proportional to the amount S present at time t, that is, dS/dt = rS, where r is the annual rate of interest. (a) Find the amount of money accrued at the end of 8 years when $5000 is deposited in a savings account drawing 5 3/4 % annual interest compounded continuously. (Round your answer to the nearest cent.) $ (b) this is the part I’m having the...
1. The total world population is forecast to be P(t) = 0.00073t3 − 0.072t2 + 0.9t...
1. The total world population is forecast to be P(t) = 0.00073t3 − 0.072t2 + 0.9t + 6.04    (0 ≤ t ≤ 10) in year t, where t is measured in decades, with t = 0 corresponding to 2000 and P(t) is measured in billions. a. World population is forecast to peak in what year? Hint: Use the quadratic formula. (Remember that t is in decades and not in years. Round your answer down to the nearest year.) ________ b. At...
Multiple Choices 4. the best way to form a cluster of 20 samples from a population...
Multiple Choices 4. the best way to form a cluster of 20 samples from a population measuring 320: a. all members of the population are written in pieces of paper and then put in a box. Twenty pieces of paper were selected from the box b. all population members are written in the alphabetical list. the first sixteen parts of the list are taken randomly and become members of the population. Then each 16th name in the list of members...