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 6.5, Problem 2E
To determine
(a)
To find:
The equilibrium solution.
To determine
(b)
To sketch:
The graph of
To determine
(c)
To sketch:
The graph of
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Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
Ch. 6.1 - ReminderRound all answers to two decimal places...Ch. 6.1 - Reminder Round all answers to two decimal places...Ch. 6.1 - Reminder Round all answers to two decimal places...Ch. 6.1 - Reminder Round all answers to two decimal places...Ch. 6.1 - Reminder Round all answers to two decimal places...Ch. 6.1 - Reminder Round all answers to two decimal places...Ch. 6.1 - Reminder Round all answers to two decimal places...Ch. 6.1 - Reminder Round all answers to two decimal places...Ch. 6.1 - Reminder Round all answers to two decimal places...Ch. 6.1 - Reminder Round all answers to two decimal places...
Ch. 6.1 - Prob. 11ECh. 6.1 - Prob. 12ECh. 6.1 - Velocity What is the rate of change in directed...Ch. 6.1 - Sign of VelocityWhen directed distance is...Ch. 6.1 - Sign of VelocityWhen the graph of directed...Ch. 6.1 - Constant VelocityWhen velocity is constant, what...Ch. 6.1 - Constant Velocity When the graph of directed...Ch. 6.1 - Prob. 6SBECh. 6.1 - Prob. 7SBECh. 6.1 - Prob. 8SBECh. 6.1 - Prob. 9SBECh. 6.1 - Prob. 10SBECh. 6.1 - Change in Direction A graph of directed distance...Ch. 6.1 - Prob. 12SBECh. 6.2 - Prob. 1ECh. 6.2 - Reminder Round all answers to two decimal places...Ch. 6.2 - Reminder Round all answers to decimal places...Ch. 6.2 - Reminder Round all answers to decimal places...Ch. 6.2 - Reminder Round all answers to decimal places...Ch. 6.2 - Reminder Round all answers to decimal places...Ch. 6.2 - Reminder Round all answers to decimal places...Ch. 6.2 - Prob. 8ECh. 6.2 - Reminder Round all answers to decimal places...Ch. 6.2 - Prob. 10ECh. 6.2 - Prob. 11ECh. 6.2 - ReminderRound all answers to two decimal places...Ch. 6.2 - Reminder Round all answers to two decimal places...Ch. 6.2 - ReminderRound all answers to two decimal places...Ch. 6.2 - Prob. 15ECh. 6.2 - Prob. 16ECh. 6.2 - Prob. 17ECh. 6.2 - Prob. 18ECh. 6.2 - SKILL BUILDING EXERCISES Marginal Cost: Let C(n)...Ch. 6.2 - SKILL BUILDING EXERCISES Marginal Profit: Your...Ch. 6.2 - SKILL BUILDING EXERCISES Buying for the Short...Ch. 6.2 - SKILL BUILDING EXERCISES Buying a company: You are...Ch. 6.2 - Meaning Of Rate Change: What is the common term...Ch. 6.2 - A Mathematical Term: If f=f(x), then we use dfdx...Ch. 6.2 - Sign of the Derivative: Suppose f=f(x). What is...Ch. 6.2 - Prob. 8SBECh. 6.2 - Prob. 9SBECh. 6.2 - Prob. 10SBECh. 6.2 - Prob. 11SBECh. 6.2 - Prob. 12SBECh. 6.2 - Prob. 13SBECh. 6.2 - Prob. 14SBECh. 6.2 - Prob. 15SBECh. 6.2 - Prob. 16SBECh. 6.3 - ReminderRound all answers to two decimal places...Ch. 6.3 - ReminderRound all answers to two decimal places...Ch. 6.3 - Reminder Round all answers to two decimal places...Ch. 6.3 - Reminder Round all answers to two decimal places...Ch. 6.3 - ReminderRound all answers to two decimal places...Ch. 6.3 - ReminderRound all answers to two decimal places...Ch. 6.3 - ReminderRound all answers to two decimal places...Ch. 6.3 - Prob. 8ECh. 6.3 - Prob. 9ECh. 6.3 - Prob. 10ECh. 6.3 - ReminderRound all answers to two decimal places...Ch. 6.3 - Prob. 12ECh. 6.3 - Rate of Change for a Linear Function If f is the...Ch. 6.3 - Rate of Change for a Linear Function If f is the...Ch. 6.3 - Rate of Change from Data Suppose f=f(x) satisfies...Ch. 6.3 - Rate of Change from Data Suppose f=f(x) satisfies...Ch. 6.3 - Prob. 5SBECh. 6.3 - Prob. 6SBECh. 6.3 - Estimating Rates of Change By direct calculation,...Ch. 6.3 - Estimating Rates of Change with the CalculatorMake...Ch. 6.3 - Prob. 9SBECh. 6.3 - Prob. 10SBECh. 6.3 - Prob. 11SBECh. 6.3 - Prob. 12SBECh. 6.3 - Prob. 13SBECh. 6.3 - Prob. 14SBECh. 6.4 - ReminderRound all answers to two decimal places...Ch. 6.4 - Reminder Round all answers to two decimal places...Ch. 6.4 - Reminder Round all answers to two decimal places...Ch. 6.4 - Prob. 4ECh. 6.4 - Prob. 5ECh. 6.4 - Prob. 6ECh. 6.4 - Prob. 7ECh. 6.4 - Prob. 8ECh. 6.4 - Prob. 9ECh. 6.4 - Prob. 10ECh. 6.4 - Prob. 11ECh. 6.4 - Prob. 12ECh. 6.4 - Prob. 13ECh. 6.4 - Prob. 14ECh. 6.4 - Prob. 1SBECh. 6.4 - Prob. 2SBECh. 6.4 - Prob. 3SBECh. 6.4 - New Equation of Change? The tax liability T in...Ch. 6.4 - Prob. 5SBECh. 6.4 - Prob. 6SBECh. 6.4 - Prob. 7SBECh. 6.4 - Prob. 8SBECh. 6.4 - Prob. 9SBECh. 6.4 - Prob. 10SBECh. 6.4 - A Leaky BalloonA balloon leaks air changes volume...Ch. 6.4 - Prob. 12SBECh. 6.4 - Solving an Equation of Change Solve the equation...Ch. 6.4 - Prob. 14SBECh. 6.4 - Filling a Tank The water level in a tank rises...Ch. 6.4 - Solving an Equation of Change Solve the equation...Ch. 6.5 - Reminder Round all answers to two decimal places...Ch. 6.5 - Prob. 2ECh. 6.5 - Prob. 3ECh. 6.5 - Prob. 4ECh. 6.5 - Prob. 5ECh. 6.5 - Prob. 6ECh. 6.5 - Prob. 7ECh. 6.5 - Prob. 8ECh. 6.5 - Prob. 9ECh. 6.5 - Prob. 10ECh. 6.5 - Prob. 11ECh. 6.5 - Prob. 12ECh. 6.5 - Prob. 13ECh. 6.5 - Prob. 1SBECh. 6.5 - Prob. 2SBECh. 6.5 - Prob. 3SBECh. 6.5 - Prob. 4SBECh. 6.5 - Prob. 5SBECh. 6.5 - Prob. 6SBECh. 6.5 - WaterWater flows into a tank, and a certain part...Ch. 6.5 - Prob. 8SBECh. 6.5 - Prob. 9SBECh. 6.5 - Prob. 10SBECh. 6.5 - Prob. 11SBECh. 6.5 - Prob. 12SBECh. 6.5 - Equation of ChangeFor the equation of change...Ch. 6.5 - Prob. 14SBECh. 6.CR - Prob. 1CRCh. 6.CR - Prob. 2CRCh. 6.CR - Prob. 3CRCh. 6.CR - Prob. 4CRCh. 6.CR - Prob. 5CRCh. 6.CR - Prob. 6CRCh. 6.CR - Prob. 7CRCh. 6.CR - Prob. 8CRCh. 6.CR - Prob. 9CRCh. 6.CR - Prob. 10CRCh. 6.CR - Prob. 11CRCh. 6.CR - Prob. 12CRCh. 6.CR - Prob. 13CRCh. 6.CR - Prob. 14CRCh. 6.CR - Prob. 15CRCh. 6.CR - Prob. 16CRCh. 6.CR - Prob. 17CRCh. 6.CR - Prob. 18CRCh. 6.CR - Reminder Round all answers to two decimal places...Ch. 6.CR - Prob. 20CR
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- Reminder Round all answers to two decimal places unless otherwise indicated. Small Business Loan After t years, a small business owes B dollars on a loan. The balance draws a continuous compounding rate of 6 per year, and payments of 5000 per year are made to the lending institution. Then the equation of change for the account balance is given by dBdt=0.06B5000 a. Find the equilibrium solution. b. Explain what is happening at the equilibrium solution in practical terms. c. If the small business expects to pay off the loan eventually, should B be larger or smaller than the equilibrium solution?arrow_forwardReminder Round all answers to two decimal places unless otherwise indicated. Inflation The yearly inflation rate tells the percentage by which prices increase. For example, from 1990 through 2000, the inflation rate in the United States remained stable at amount 3 per year. In 1990, an individual retired on a fixed income of 36,000 per year. Assuming that the inflation rate remains at 3, determine how long it will take for the retirement income to deflate to half its 1990 value. Note: To say that retirement income has deflated to half its 1990 value means that prices have doubled.arrow_forwardReminder Round all answers to two decimal places unless otherwise indicated. World Copper Production World production of copper, in millions of tons per year, from 1900 to 2000 is given by C=0.51.033t, where t is the time in years since 1900. a.What production level does this model give for the year 2000? b.If this model were extended to 2025, how could you use your knowledge of copper production in 2024 to estimate copper production in 2025?arrow_forward
- Reminder Round all answers to two decimal places unless otherwise indicated. WendysAccording to a report in The Wall Street Journal, Wendys revenue fell 3.2 to 489.5million in the second quarter of 2015. That represents a quarterly decay rate, as a decimal of e0.0325. Let R(t) denote Wendys revenue, in millions of dollars, t quarters after the second quarter of 2015. Suppose that revenue continues to fall at this same rate. a.Write the equation of change for Wendys revenue. b.Find a formula that gives Wendys revenue t quarters after the second quarter of 2015.arrow_forwardReminderRound all answers to two decimal places unless otherwise indicated. Equilibrium PriceThis is a continuation of Exorcise 5. The equilibrium price is the price where the supply and demand are the same. In Figure 1.31, the supply curve is in red and the demand curve is in blue. Use this graph to estimate the equilibrium price. How many items are supplied at the equilibrium price? FIGURE 1.31 5. Supply and Demand CurvesA supply curve is a graph that shows the quantity of a product that is made available by suppliers as a function of the price. Similarly, a demand curve is a graph that shows the quantity of a product that consumers are willing to purchase as a function of the price. Examples of supply and demand curves are shown in Figures 1.29 and 1.30. a.Explain in practical terms what the supply curve in Figure 1.29 tells us. b.Explain in practical terms what the demand curve in Figure 1.30 tells us. FIGURE 1.29 A Supply curve FIGURE 1.30 A demand curvearrow_forwardReminderRound all answers to two decimal places unless otherwise indicated. InflationDuring a period of high inflation, a political leader was up for re-election. Inflation had been increasing during his administration, but he announced that the rate of increase of inflation was decreasing. Draw a graph of inflation versus time that illustrates this situation. Would this announcement convince you that economic conditions were improving?arrow_forward
- Reminder Round all answers to two decimal places unless otherwise indicated. Paying Off a Credit Card You owe 8000 on a credit card. Because of the high balance, you stop charging and begin paying off the card. You can afford to make only the minimum monthly payment, which is 5 of the balance. The card carries an APR of 24. Under these conditions, the remaining balance alter t monthly payments is given by B=8000(1.020.95)tdollars, You feel comfortable resuming charging with the card when the balance is between 1000 and 2000. a. Plot the graph of B along with the target values of 1000 and 2000. Use a horizontal span of 0 to 100. b. For what values oft is the function B in the desired range? c. After how many monthly payments can you resume charging? Your answer should be a whole number.arrow_forwardReminder Round all answer to two decimal places unless otherwise indicated. Real Estate Sales A real estate agency has fixed monthly costs associated with rent, staff salaries, utilities, and supplies. It earns its money by taking a percentage commission on total real estate sales. During the month of July, the agency had total sales of 832,000 and showed a net income after paying fixed costs of 15,704. In August, total sales were 326,000 with a net income of only 532. a. Use a formula to express net income as a linear function of total sales. Be sure to identify what the letters that you use mean. b. Plot the graph of net income and identify the slope and vertical intercept. c. What are the real estate agencys fixed monthly costs? d. What percentage commission does the agency take on the sale of a home? e. Find the horizontal intercept and explain what this number means to the real estate agency.arrow_forwardReminder Round all answers to two decimal places unless otherwise indicated. Quarterly Pine Pulpwood PricesIn southwest Georgia, the average pine pulpwood prices vary predictably over the course of the year, primarily because of weather. Prices in 2009 followed this pattern. At the beginning of the first quarter, the average price P was 9 per ton. During the first quarter, prices declined steadily to 8 per ton, then remained steady at 8 per ton through the end of the third quarter. During the fourth quarter, prices increased steadily from 8 to 10 per ton. a.Sketch a graph of pulpwood prices as a function of the quarter in the year. b.What formula for price P as a function of t, the quarter, describes the price from the beginning of the year through the first quarter? c.What formula for price P as a function of t, the quarter, describes the price from the first to the third quarter? d.What formula for price P as a function of t, the quarter, describes the price from the third to the fourth quarter? e.Write a formula for price P throughout the year as a piecewise-defined function of t, the quarter.arrow_forward
- Reminder Round all answers to two decimal places unless otherwise indicated. Mittenwalde Is Rich In 1562, the town of Mittenwalde lent Berlin 400 guilders repayable at 6 per year. The debt has yet to be repaid. a.Assuming that interest is compounded annually, how much in trillions of guilders did Berlin owe to Mittenwalde in 2012? b.We take the value of a 1562 guilder to be about 0.45 dollar. In trillions of dollars, how much was Berlins debt in 2012? c.Do you think it likely that Mittenwalde will ever collect from Berlin?arrow_forwardReminderRound all answers to two decimal places unless otherwise indicated. Tornadoes In OklahomaThe graph in Figure 1.41 shows the number T=T(d) of tornadoes in Oklahoma Fl/EF1 and stronger reported by the National Climatic Data Center. Round your answers to the nearest whole number. a. When were the most tornadoes reported? How many were reported in that year? b. When were the fewest tornadoes reported? How many were reported in that year? c. What was the average yearly rate of decrease in tornadic activity from 2011 to 2012? d. What was the average yearly rate of increase in tornadic activity from 2009 to 2011? e. What was the average yearly rate of change that is, the average yearly rate of total increase or total decrease in tornadic activity from 2009 to 2012? FIGURE 1.41 Tornadoes in Oklahomaarrow_forwardReminder: Round all answer to two decimal places unless otherwise indicated. 15.Total Cost The total cost C for a manufacturer during a given time period is a function of the number N of items produced during that period. To deter mine a formula for the total cost, we need to know the manufacturers fixed costs covering things such as plant maintenance and insurance, as well as the cost for each unit produced, which is called the variable cost. To find the total cost, we multiply the variable cost by the number of items produced during that period and then add the fixed costs. Suppose that a manufacturer of widgets has fixed costs of 9000 per month and that the variable cost is 15 per widget so it costs 15 to produce 1 widget. a. Use a formula to express the total cost C of this manufacturer in a month as a function of the number of widgets produced in a month. Be sure to state the units you use. b. Express using functional notation the total cost if there are 250 widgets produced in a month, and then calculate that value.arrow_forward
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