3Safin designed and launched an app.One week after he launched the app, it had 8 400 users.Four weeks after he launched the app, it had 23 050 users.The user growth followed the model of an exponential function of the form f(x) = acx,where x: the time elapsed since the app was launched, in weeksf (x): the number of usersA company tried to buy Safin's app when it reached 50 000 users.Hoping to make more money, Safin waited and finally sold the app when it reached 400 000users.To the nearest tenth, how many weeks after the original offer did Safin sell his app?

Answered: Image /qna-images/answer/21c44bb9-2cd8-4414-9f46-bf4baa9a6fa3.jpg

Answered: 3 Safin designed and launched an app.…

Calculus: Early Transcendentals

8th Edition

ISBN:9781285741550

Author:James Stewart

Publisher:James Stewart

Chapter1: Functions And Models

Section: Chapter Questions

Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...

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The population of a small town was 10,400 in 2004.since then the population has decreased at a rate 0f 3.5% each year .write an exponential function to model the situation ,then find the population of the town in 2021.
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A survey approximates the number of Americans that are age 65 and older and projects that by the year 2050, approximately 82.6 million Americans will be at least 65. The bar graph shows the estimated number of Americans with projected figures for the year 2020 and beyond. A graphing calculator screen displays an exponential function that models the U.S. population age 65 and over, y, in millions, x years after 1899. Use this information to solve (a)-(d) below. Click the icon to view the bar graph. 最重 ExpReg y = a-b^x a = 3.363809536 b = 1.023357735 a. Explain why an exponential function was used to model the population data. A. An exponential function was used because the data in the bar graph is increasing more and more rapidly. OB. An exponential function was used because population is always modeled using exponential functions. OC. An exponential function was used because there are too many data points to use a linear function. OD. An exponential function was used because…
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