Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
JamenS
Group Title
In 1987, the Australian humpback whale population was 350 and has increased at a rate of about 14% each year since then. Write a function to model population growth. Use a graph to predict when the population will reach 20, 000.
 one year ago
 one year ago
JamenS Group Title
In 1987, the Australian humpback whale population was 350 and has increased at a rate of about 14% each year since then. Write a function to model population growth. Use a graph to predict when the population will reach 20, 000.
 one year ago
 one year ago

This Question is Closed

Traxter Group TitleBest ResponseYou've already chosen the best response.0
Use the compound interest formula you used in the other question.
 one year ago

JamenS Group TitleBest ResponseYou've already chosen the best response.0
sooo wud it b 350(1+1.014)=20000
 one year ago

Traxter Group TitleBest ResponseYou've already chosen the best response.0
Almost, the graph you will draw is 350(1+0.014)^n. Then you will go to the point where the graph equals 20,000 and see how many years it has been.
 one year ago

Traxter Group TitleBest ResponseYou've already chosen the best response.0
290.99 is the correct answer, did you solve it using the graph?
 one year ago

JamenS Group TitleBest ResponseYou've already chosen the best response.0
no im not sure how 2 graph it
 one year ago

Traxter Group TitleBest ResponseYou've already chosen the best response.0
http://www.wolframalpha.com/input/?i=350%281.014%29^n+from+1+to+300
 one year ago

JamenS Group TitleBest ResponseYou've already chosen the best response.0
a)P(t) = 350(1.14)t; the population will reach 20,000 in about 30.9 yr. b)P(t) = 350(0.86)t; the population will reach 20,000 in about 19.5 yr. c)P(t) = 350(0.86)t; the population will reach 20,000 in about 39.1 yr.wwwwww d)P(t) = 350(1.14)t; the population will reach 20,000 in about 25.6 yr.
 one year ago

Traxter Group TitleBest ResponseYou've already chosen the best response.0
Sorry, 290.99 is not the correct answer at all. The interest is 14% (which is 1.14), not 1.4% (which is 1.014). If you put 1.14 into the formula instead of 1.014 you should get the correct answer. Let me know how it goes.
 one year ago

JamenS Group TitleBest ResponseYou've already chosen the best response.0
wud it b A?
 one year ago

Traxter Group TitleBest ResponseYou've already chosen the best response.0
The answer on my calculator is 30.87543347. The correct rounding of this to one decimal place is 30.9. So the answer is A.
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.