Concept explainers
Reminder Round all answers to two decimal places unless otherwise indicated.
Cutting Trees In forestry management, it is important to know the net stumpage value of a stand (that is, a group) of trees. This is the commercial value of the trees minus the costs of felling, hauling, etc. The graph in Figure
FIGURE
a. Estimate the net stumpage value of a Douglas fir 1 stand that is
b. Estimate the age of a Douglas fir stand whose net stumpage value is
c. At what age does the commercial value of the stand equal the costs of felling, hauling, etc.?
d. At what age is the net stumpage value increasing the fastest?
e. This graph shows V only up to age
Trending nowThis is a popular solution!
Chapter 1 Solutions
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
Additional Math Textbook Solutions
Intermediate Algebra (13th Edition)
Beginning and Intermediate Algebra
Pre-Algebra Student Edition
College Algebra (6th Edition)
College Algebra (10th Edition)
College Algebra
- Body Mass Index The following graph shows how the body mass index-for-age percentile for girls varies from the age of 2to20 years. Source: Centers for Disease Control. a. Sketch a graph of the rate of change of the 95th percentile as a function of age. b. Sketch a graph of the rate of change of the 50th percentile as a function of age.arrow_forwardFarms in the United States The graph gives the number of farms in the United States from 1850 to 2000. aEstimate the average rate of change in the number of farms between i 1860 and 1890 and ii 1950 and 1970. bIn which decade did the number of farms experience the greatest average rate of decline?arrow_forwardHuman Growth The growth remaining in sitting height at consecutive skeletal age levels for boys is indicated in the next column. Sketch a graph showing the rate of change of growth remaining for the indicated years. Use the graph and your sketch to estimate the remaining growth and the rate of change of remaining growth for a 14-year-old boy.arrow_forward
- Body Mass Index The following graph shows how the body mass index-for-age percentile for boys varies from the age of 2 to 20 years. a. Sketch a graph of the rate of change of the 95 th percentile as a function of age. b. Sketch a graph of the rate of change of the 50 th percentile as a function of age.arrow_forwardTelephone Service The percent P of households in the United States with wireless-only telephone service from 2005 through 2014 can be approximated by the model P=3.42+1.297tlnt,5t14 where t represents the year, with t=5 corresponding to 2005. (Source: National Center for Health Statistics) (a) Approximate the percents of households with wireless-only telephone service in 2008 and 2012. (b) Use a graphing utility to graph the function. (c) Can the model be used to predict the percent of households with wireless-only telephone service in 2020? in 2030? Explain.arrow_forwardUse the table feature on a graphing calculator or a spreadsheet to develop a table that shows how much of the drug is present in a patients system at the end of each 1/2 hour time interval for 24 hours for the model found in Exercise 1a. A chart such as this provides the health care worker with immediate information about drug levels. Exercise: 1. A 500-mg dose of a drug is administered by rapid injection to a patient. The half-life of the drug is 9 hours. a. Find a model for the amount of drug in the bloodstream t hours after the drug is administered.arrow_forward
- Earthquake the graph shows the vertical acceleration of the Ground from the 1994 Northridge earthquake in Los Angles, as measured by a seismograph. (Here t represents the time in seconds.) (a) At what time t did the earthquake first make noticeable movement of the Earth? (b) At what time t did the earthquakes seem to end? (c) At what time t was the maximum intensity of the earthquake list reachedarrow_forwardLIFE SCIENCE APPLICATIONS Whales Diving The figure shows the depth of a diving sperm whale as a function of time, as recorded by researchers at the Woods Hole Oceanographic Institution in Massachusetts. Source: Peter Tyack, Woods Hole Oceanographic Institution. Find the depth of the whale at the following times. a. 17 hours and 37 minutes b. 17 hours and 39 minutesarrow_forward
- Calculus For The Life SciencesCalculusISBN:9780321964038Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.Publisher:Pearson Addison Wesley,Trigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage LearningCollege AlgebraAlgebraISBN:9781305115545Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage Learning
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage LearningAlgebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage Learning