A culture of bacteria in a Petri dish has an initial population of 1500 cells and grows at a rate (in cells/day) of $N^{\prime}(t)=100 e^{-0.25 t}$ Assume $t$ is measured in days. a. What is the population after 20 days? After 40 days? b. Find the population $N(t)$ at any time $t \geq 0$.
Added by Nieves S.
Step 1
25t} dt\] \[N(t) = -400e^{-0.25t} + C\] Show more…
Show all steps
Close
Your feedback will help us improve your experience
Babita Kumari and 70 other Calculus 1 / AB educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
A culture of bacteria in a Petri dish has an initial population of 1500 cells and grows at a rate (in cells/day) of N'(t) = 100e^(-0.25t). Assume t is measured in days. a. What is the population after 20 days? After 40 days? b. Find the population N(t) at any time t ≥ 0.
Madhur L.
A culture of bacteria in a particular dish has an initial population of 300 cells and grows at a rate of N'(t) = 40e^(0.40236t) cells/day. Find the population N(t) at any time t ≥ 0. What is the population after 10 days? Find a formula for the number of cells, N(t), after t days. N(t) = (Round any numbers in exponents to five decimal places. Round all other numbers to the nearest tenth.) After 10 days, there are cells present. (Use the answer from part a to find this answer. Round to the nearest whole number as needed.)
Vishal P.
Population Growth The rate of growth $d P / d t$ of a population of bacteria is proportional to the square root of $t,$ where $P$ is the population size and $t$ is the time in days $(0 \leq t \leq 10) .$ That is, $\frac{d P}{d t}=k \sqrt{t}$ The initial size of the population is $500 .$ After 1 day, the population has grown to $600 .$ Estimate the population after 7 days.
Integration
Antiderivatives and Indefinite Integration
Recommended Textbooks
Calculus: Early Transcendentals
Thomas Calculus
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD