Pre-Calculus

Have pre-calculus questions? Ask a pre-calculus tutor

Connect one-on-one with {0} who will answer your question

*Find the solution of the...

*Find the solution of the exponential equation, as in Example 1. (Enter your answers as a comma-separated list.)

15^3x − 4 = 1/15

x =*A small lake is stocked with a certain species of fish. The fish population is modeled by the function

P =

14/1 + 4e^−0.5t*A 15-g sample of radioactive iodine decays in such a way that the mass remaining after t days is given by m(t) = 15e^−0.063t, where m(t) is measured in grams. After how many days is there only 3 g remaining? (Round your answer to the nearest whole number.)*where P is the number of fish in thousands and t is measured in years since the lake was stocked.

(a) Find the fish population after 4 years. (Round your answer to the nearest whole fish.)(b) After how many years will the fish population reach 7000 fish? (Round your answer to two decimal places.)

____ yr

15^3x − 4 = 1/15

x =*A small lake is stocked with a certain species of fish. The fish population is modeled by the function

P =

14/1 + 4e^−0.5t*A 15-g sample of radioactive iodine decays in such a way that the mass remaining after t days is given by m(t) = 15e^−0.063t, where m(t) is measured in grams. After how many days is there only 3 g remaining? (Round your answer to the nearest whole number.)*where P is the number of fish in thousands and t is measured in years since the lake was stocked.

(a) Find the fish population after 4 years. (Round your answer to the nearest whole fish.)(b) After how many years will the fish population reach 7000 fish? (Round your answer to two decimal places.)

____ yr

Show More

Show Less

Was this answer helpful?

Describe your issueThe assistant will guide you

Chat 1:1 with a tutorLicensed Experts are available 24/7

100% satisfaction guaranteeGet all the answers you need

Related Pre-Calculus Questions

I need help with exponential and logarithmic models. I have

I need help with exponential and logarithmic models. I have 2 questions and 1 hour to complete them.Question 1: The doubling time of a bacterial population is 15 minutes. After 110 minutes, the bacter… read more

Again :) I have been trying to reach you and I write

Hi again :) I have been trying to reach you and I write hi and tell you that I'm at hospital with mom again and that this week for team paper I need to answer task 5 after others respond their task ..… read more

I have total of 20 questions " refresher " required

Hi. I have total of 20 questions for this " refresher " required math course . I am mega rusty plus working full time plus 2 special needs kids and mother with cancer. I need help here. My card has al… read more

Find a polynomial with integer coefficients that satisfies

Find a polynomial with integer coefficients that satisfies the given conditions.Q has degree 3 and zeros −6 and 1 + i. … read more

I have a final exam I need help with. Class QRB 501. It is

Hello, I have a final exam I need help with. Class QRB 501. It is 30 questions long and I only have 120 minutes to complete it. Can you help me? It is very time restricted so I need to know if that is… read more

Name: valencia XXXXXXXXX _________ Student Number:

Name: valencia XXXXXXXXX _________ Student Number: XXXXXXXXXXX___________________ 1. Elsie is making a quilt using quilt blocks like the one in the diagram. a. How many lines of symmetry are there? Ty… read more

Record your answers and work on the separate answer sheet provided. There

Record your answers and work on the separate answer sheet provided. There are 28 problems. Problems #1–6 are Multiple Choice. Problems #7–17 are Short Answer. (Work not required to be shown) Problems … read more

Question 1: (1 point) Evaluate log3127‾‾‾√4without using

Question 1: (1 point) Evaluate log3127‾‾‾√4without using a calculator. If the answer is not an integer, enter it as a fraction in simplest form. log3127‾‾‾√4 = __________ Question 2: (1 point) Evaluat… read more

1) Describe the transformations on the following graph of f

1) Describe the transformations on the following graph of f (x) log( x) . State the placement of the vertical asymptote and x-intercept after the transformation. For example, vertical shift up 2 or … read more

There are 25 problems. Problems #1–12 are Multiple Choice. Problems

There are 25 problems. Problems #1–12 are Multiple Choice. Problems #13–15 are Short Answer. (Work not required to be shown) Problems #16–25 are Short Answer with work required to be shown. MULTIPLE C… read more

"For Guru2009 only 1. Using the formula for simple interest

"For Guru2009 only 1. Using the formula for simple interest and the given values, find I. P=$200; r=6%; t=4 years; I=? I=$__ 2. Using the formula for simple interest, I=Prt, to find the indicated quan… read more

1. One estimate for the ideal body weight is shown below. Use

1. One estimate for the ideal body weight is shown below. Use this information to answer (a). 47 kg + 1.2 kg for each inch over 5 feet (a) Find a linear model for an estimate of the idea weight of a w… read more

Questions 12 to 15 The value of a stock market share may be

Questions 12 to 15 The value of a stock market share may be assumed to vary from day to day according to the following rule: if it is worth £n one day (n > 0), then the next day with probability p … read more

1.What is the future value of an ordinary annuity of $18,000

1.What is the future value of an ordinary annuity of $18,000 per year, for two yrs, at 11% interest compounded annually? 2.Sheila has a revolving department store credit card account with an annual pe… read more

1. What is the primary reason for applying a finite population correct

1. What is the primary reason for applying a finite population correction coefficient? A. When the sample is a very small portion of the population, the correction coefficient is required. B. If you d… read more

1. 70% of 600 is what? 2. 31yd^2 = ___ ft^2 3. A map has

1. 70% of 600 is what? 2. 31yd^2 = ___ ft^2 3. A map has a scale of 3 miles to the inch. How far apart in reality are two cities that are 18 inches apart on the map? How far apart on the map are two c… read more

Solve the problem. A small farm field is a square measuring

Solve the problem. A small farm field is a square measuring 200 ft on a side. What is the perimeter of the field? If you double the length of each side of the field, what is the new perimeter? 400 ft,… read more

I will tip as usual, more based on the number of problems:

I will tip as usual, more based on the number of problems: Multiply: (9y-7)(81y^2 + 63y + 49) (x+3)(x-5) (3a^2b^4)(4a^2b^2) -12(6x + 2) (7p -1)(49p^2 + 7p +1) (x+3)(x-3) 7ax^5(4ax^4 + 6x^2 +7) (x-3)(9… read more

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.

JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.

Web sites like justanswer.com/legal

...leave nothing to chance.

...leave nothing to chance.

Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.

Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.

I will tell you that...the things you have to go through to be an Expert are quite rigorous.

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

Los Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

Hesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

Kernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

Woodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

Elkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

Dallas, TX

< Previous | Next >

rajeevanpillai

Master's Degree

480 satisfied customers

B.Sc in Mathematics and M.Sc, M Phil in Statistics

Mr. Gregory White

Master's Degree

167 satisfied customers

M.A., M.S. Education / Educational Administration

mhasan420

Master's Degree

37 satisfied customers

BA Maths, Oxford

JACUSTOMER-yrynbdjl-

Master's Degree

13 satisfied customers

I have taught college Mathematics for the past 10 years.

Dr. Arthur Rubin

Doctoral Degree

12 satisfied customers

Ph.D. in Mathematics, 1978, from the California Institute of Technology, over 20 published papers

Sandhya_sharma

Master's Degree

1,250 satisfied customers

I hold M.Sc and M.Phil degrees in math and have several years of teaching experience.

Kofi

PhD in Statistics

868 satisfied customers

Masters in Mathematics and Statistics

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.