Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN: 9781337111348
Author: Bruce Crauder, Benny Evans, Alan Noell
Publisher: Cengage Learning
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Chapter 4.CR, Problem 16CR
To determine
(a)
To find:
The time at which population reaches a size of
To determine
(b)
To find:
The initial population size.
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Chapter 4 Solutions
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
Ch. 4.1 - TEST YOUR UNDESTANDING| FOR EXAMPLE 4.1...Ch. 4.1 - TEST YOUR UNDERSTANDING| FOR EXAMPLE 4.2 In a...Ch. 4.1 - Prob. 3TUCh. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...
Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Reminder Round all answers to two decimal places...Ch. 4.1 - Exponential Growth with Given Initial Value and...Ch. 4.1 - Exponential Decay with Given Initial Value and...Ch. 4.1 - Exponential GrowthAn amount A is initially 10. To...Ch. 4.1 - Exponential GrowthAn amount A is initially 8. To...Ch. 4.1 - Exponential DecayAn amount A is initially 7. To...Ch. 4.1 - Prob. 6SBECh. 4.1 - Exponential ChangeAn amount A is initially 8. To...Ch. 4.1 - Exponential changes The initial amount is 4, To...Ch. 4.1 - Function Value from Initial Value and Growth...Ch. 4.1 - Function Value from Initial Value and Growth...Ch. 4.1 - Finding the Growth Factor Suppose that f is an...Ch. 4.1 - Exponential Decay Is the graph of exponential...Ch. 4.1 - Exponential Decay What is the concavity of a graph...Ch. 4.1 - Exponential Growth What is the concavity of a...Ch. 4.1 - Rate of Change What can be said about the rate of...Ch. 4.1 - Exponential Growth Is the graph of exponential...Ch. 4.1 - Changing Units A certain quantity has a yearly...Ch. 4.1 - Changing Units A certain quantity has a yearly...Ch. 4.1 - Prob. 19SBECh. 4.1 - Changing UnitsA certain quantity has a yearly...Ch. 4.1 - Prob. 21SBECh. 4.2 - TEST YOUR UNERSTANDING | FOR EXAMPLE 4.4 Suppose...Ch. 4.2 - TEST YOUR UNDERSTANDING | FOR EXAMPLE 4.5 There...Ch. 4.2 - TEST YOUR UNDERSTANDING | FOR EXAMPLE 4.6 You get...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Prob. 14ECh. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Prob. 17ECh. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Reminder Round all answers to two decimal places...Ch. 4.2 - Making ModelsIn Exercise S-1 through S-4, make an...Ch. 4.2 - Prob. 2SBECh. 4.2 - Making ModelsIn Exercise S-1 through S-4, make an...Ch. 4.2 - Prob. 4SBECh. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Prob. 12SBECh. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Prob. 18SBECh. 4.2 - Prob. 19SBECh. 4.2 - Prob. 20SBECh. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Prob. 22SBECh. 4.2 - Prob. 23SBECh. 4.2 - Prob. 24SBECh. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Prob. 26SBECh. 4.2 - Round each percentage increase or decrease that...Ch. 4.2 - Prob. 28SBECh. 4.2 - Round each percentage increase or decrease that...Ch. 4.3 - TEST YOUR UNDERSTANDING | FOR EXAMPLE 4.7 The...Ch. 4.3 - TEST YOUR UNDERSTANDING | FOR EXAMPLE 4.8 A snake...Ch. 4.3 - TEST YOUR UNDERSTANDING | FOR EXAMPLE 4.9 A...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Prob. 17ECh. 4.3 - Reminder Round all answers to two decimal places...Ch. 4.3 - Prob. 19ECh. 4.3 - Prob. 20ECh. 4.3 - Finding exponential formula In Exercise S-1 trough...Ch. 4.3 - Prob. 2SBECh. 4.3 - Finding an Exponential formula In Exercise S-1...Ch. 4.3 - Prob. 4SBECh. 4.3 - Finding an Exponential formula In Exercise S-1...Ch. 4.3 - Finding an Exponential formula In Exercise S-1...Ch. 4.3 - Prob. 7SBECh. 4.3 - Prob. 8SBECh. 4.3 - Prob. 9SBECh. 4.3 - Prob. 10SBECh. 4.3 - Testing Exponential DataIn Exercises S-8 through...Ch. 4.3 - Testing Exponential DataIn Exercises S-8 through...Ch. 4.3 - Prob. 13SBECh. 4.3 - Prob. 14SBECh. 4.3 - Prob. 15SBECh. 4.3 - Testing Exponential DataIn Exercises S-8 through...Ch. 4.3 - Prob. 17SBECh. 4.3 - Prob. 18SBECh. 4.3 - Prob. 19SBECh. 4.3 - Prob. 20SBECh. 4.3 - Prob. 21SBECh. 4.4 - TEST YOUR UNDERSTANDING | FOR EXAMPLE 4.10 The...Ch. 4.4 - TEST YOUR UNDERSTANDING | FOR EXAMPLE 4.11 A small...Ch. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Prob. 7ECh. 4.4 - Prob. 8ECh. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Prob. 12ECh. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Prob. 14ECh. 4.4 - Prob. 15ECh. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Prob. 17ECh. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Special Rounding Instructions. For this exercise...Ch. 4.4 - Special Rounding Instructions. For this exercise...Ch. 4.4 - Prob. 21ECh. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Prob. 23ECh. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Prob. 25ECh. 4.4 - Special Rounding Instructions For this exercise...Ch. 4.4 - Prob. 27ECh. 4.4 - Prob. 28ECh. 4.4 - Round all answers to two decimal places....Ch. 4.4 - Round all answers to two decimal places....Ch. 4.4 - Prob. 3SBECh. 4.4 - Prob. 4SBECh. 4.4 - Prob. 5SBECh. 4.4 - Prob. 6SBECh. 4.4 - Prob. 7SBECh. 4.4 - Prob. 8SBECh. 4.4 - Round all answers to two decimal places....Ch. 4.4 - Prob. 10SBECh. 4.4 - Prob. 11SBECh. 4.4 - Prob. 12SBECh. 4.4 - Prob. 13SBECh. 4.4 - Prob. 14SBECh. 4.4 - Prob. 15SBECh. 4.4 - Round all answers to two decimal places. Using...Ch. 4.4 - Prob. 17SBECh. 4.4 - Round all answers to two decimal places. Using...Ch. 4.4 - Round all answers to two decimal places. Using...Ch. 4.4 - Prob. 20SBECh. 4.4 - Prob. 21SBECh. 4.4 - Prob. 22SBECh. 4.4 - Prob. 23SBECh. 4.4 - Prob. 24SBECh. 4.4 - Prob. 25SBECh. 4.4 - Prob. 26SBECh. 4.4 - Prob. 27SBECh. 4.4 - Round all answers to two decimal places. Linear or...Ch. 4.5 - TEST YOUR UNDESTANDING | FOR EXAMPLE 4.12 On...Ch. 4.5 - TEST YOUR UNDERSTANDING | FOR EXAMPLE 4.13 The...Ch. 4.5 - TEST YOUR UNDERSTANDING | FOR EXAMPLE 4.14 If...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Prob. 8ECh. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Weight Gain Zoologists have studied the daily rate...Ch. 4.5 - Reaction Time For certain decisions, the time it...Ch. 4.5 - Age of Haddock The age T, in years, of a haddock...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Reminder Round all answers to two decimal places...Ch. 4.5 - Prob. 18ECh. 4.5 - Prob. 19ECh. 4.5 - Prob. 20ECh. 4.5 - Prob. 21ECh. 4.5 - Prob. 22ECh. 4.5 - Prob. 23ECh. 4.5 - Prob. 24ECh. 4.5 - Prob. 25ECh. 4.5 - Richter Scale Exercise S-1 through S-6 use...Ch. 4.5 - Richter Scale Exercise S-1 through S-6 use...Ch. 4.5 - Richter Scale Exercise S-1 through S-6 use...Ch. 4.5 - Richter Scale Exercise S-1 through S-6 use...Ch. 4.5 - Richter Scale Exercise S-1 through S-6 use...Ch. 4.5 - Richter Scale Exercise S-1 through S-6 use...Ch. 4.5 - Prob. 7SBECh. 4.5 - The Decibel scale Exercise S-7 through S-10 refer...Ch. 4.5 - Prob. 9SBECh. 4.5 - Prob. 10SBECh. 4.5 - Calculating Common LogarithmsIn Exercises S-11...Ch. 4.5 - Prob. 12SBECh. 4.5 - Prob. 13SBECh. 4.5 - Prob. 14SBECh. 4.5 - Prob. 15SBECh. 4.5 - Prob. 16SBECh. 4.5 - Prob. 17SBECh. 4.5 - Prob. 18SBECh. 4.5 - Prob. 19SBECh. 4.5 - Prob. 20SBECh. 4.5 - Prob. 21SBECh. 4.5 - Prob. 22SBECh. 4.5 - Solving Logarithmic Equations In Exercises S-22...Ch. 4.5 - Prob. 24SBECh. 4.5 - Prob. 25SBECh. 4.5 - Prob. 26SBECh. 4.5 - Prob. 27SBECh. 4.5 - Prob. 28SBECh. 4.5 - How the Logarithm IncreasesIf logx=8.3 and...Ch. 4.5 - Prob. 30SBECh. 4.5 - Prob. 31SBECh. 4.5 - Prob. 32SBECh. 4.5 - Prob. 33SBECh. 4.5 - Logarithmic Regression Logarithmic regression...Ch. 4.5 - Prob. 35SBECh. 4.5 - Prob. 36SBECh. 4.5 - Prob. 37SBECh. 4.CR - Prob. 1CRCh. 4.CR - Prob. 2CRCh. 4.CR - Prob. 3CRCh. 4.CR - Prob. 4CRCh. 4.CR - Prob. 5CRCh. 4.CR - Prob. 6CRCh. 4.CR - Prob. 7CRCh. 4.CR - ReminderRound all answers to two decimal places...Ch. 4.CR - Prob. 9CRCh. 4.CR - Prob. 10CRCh. 4.CR - Prob. 11CRCh. 4.CR - Reminder Round all answers to two decimal places...Ch. 4.CR - Prob. 13CRCh. 4.CR - Prob. 14CRCh. 4.CR - Prob. 15CRCh. 4.CR - Prob. 16CRCh. 4.FR - Reminder Round all answers to two decimal places...Ch. 4.FR - Reminder Round all answers to two decimal places...Ch. 4.FR - Prob. 3ECh. 4.FR - Prob. 4ECh. 4.FR - Prob. 5ECh. 4.FR - Prob. 6ECh. 4.FR - Prob. 7ECh. 4.FR - Prob. 8ECh. 4.FR - Prob. 9ECh. 4.FR - Prob. 10ECh. 4.FR - Prob. 11ECh. 4.FR - Prob. 12ECh. 4.FR - Prob. 13ECh. 4.FR - Prob. 14ECh. 4.FR - Prob. 15ECh. 4.FR - Prob. 16ECh. 4.FR - Prob. 17ECh. 4.FR - Prob. 18ECh. 4.FR - Prob. 19ECh. 4.FR - Prob. 20ECh. 4.FR - Prob. 21ECh. 4.FR - Prob. 22ECh. 4.FR - Prob. 23ECh. 4.FR - Prob. 24ECh. 4.FR - Prob. 25ECh. 4.FR - Illustrative Applications Exercises 23 through 26...
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- More on the Pacific Sardine This is a continuation of Example 5.1. In this exercise, we explore the Pacific sardine population further, using the model in Example 5.1. a. If the current level of the Pacific sardine population is 50,000 tons, how long will it take for the population to recover to the optimum growth level of 1.2milliontons? Suggestion: One way to solve this is to make a new logistic formula using K2.4, r0.338, and N(0)0.05. b. The value of r used in Example 5.1 ignores the effects of fishing. If fishing mortality is taken into account, then r drops to 0.215 per year with the carrying capacity still at 2.4milliontons. Answer the question in part a using this lower value of r. Note: The population estimate of 50,000 tons and the adjusted value of r are given in the paper by Murphy see footnote 3 on page 347. Murphy points out that factoring in the growth of the competing anchovy population makes the recovery times even longer, and he adds. "It is disconcerting to realize how slowly the population will recover to its level of maximum productivity ... even if fishing stops." Studies to fit a logistic model to the Pacific sardine population have yielded. N=241+239e0.338t where t is measured in years and N is measured in millions of tons of fish. Part 1 What is r for the Pacific sardine? Part 2 According to the logistic model, in the absence of limiting factors, what would be the annual percentage growth rate for the Pacific sardine? Part 3 What is the environmental carrying capacity K? Part 4 What is the optimum yield level? Part 5 Make a graph of N versus t. Part 6 At what time t should the population he harvested? Part 7 What portion of the graph is concave up? What portion is concave down?arrow_forwardSuppose that the initial size of a population is n0 and the population grows exponentially. Let n(t) be the size of the population at time t. (a) Write a formula for n(t) in terms of the doubling time a. (b) Write a formula for n(t) in terms of the relative growth rate r.arrow_forward(a) How is the number e defined? (b) Given an approximate value of e, rounded to five decimal places. (c) What is the natural exponential function?arrow_forward
- Growth Rate Versus Weight Ecologists have studied how a populations intrinsic exponential growth rate r is related to the body weight W for herbivorous mammals. In table 5.2, W is the adult weight measured in pounds, and r is growth rate per year. Animal Weight W r Short-tailed vole 0.07 4.56 Norway rat 0.7 3.91 Rue deer 55 0.23 White-tailed deer 165 0.55 American elk 595 0.27 African elephant 8160 0.06 Find a formula that models r as a power function of W, and draw a graph of this function.arrow_forwardRound all answers to two decimal places. InflationDuring a certain period, the price of a bag of groceries grows by about 3 each year. Which regression model should be used to approximate the price of a bag of groceries as a function of time: linear or exponential?arrow_forwardPopulation The table shows the mid-year populations (in millions) of five countries in 2015 and the projected populations (in millions) for the year 2025. (a) Find the exponential growth or decay model y=aebt or y=aebt for the population of each country by letting t=15 correspond to 2015. Use the model to predict the population of each country in 2035. (b) You can see that the populations of the United States and the United Kingdom are growing at different rates. What constant in the equation y=aebt gives the growth rate? Discuss the relationship between the different growth rates and the magnitude of the constant.arrow_forward
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