Concept explainers
TEST YOUR UNDERSTANDING | FOR EXAMPLE 1.5
From
EXAMPLE 1.5 CURRENCY EXCHANGE
Figure
Part 1 Explain the meaning of F(2003) and estimate its value.
Part 2 From 2000 through 2011, what was the largest value the euro attained? When did that happen?
Part 3 What was the average yearly increase in the value of the euro from 2006 to 2009?
Part 4 During which one-year period was the graph increasing most rapidly?
Part 5 As an American investor, would you have made money if you bought euros in 2002 and sold them in 2008?
Want to see the full answer?
Check out a sample textbook solutionChapter 1 Solutions
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
Additional Math Textbook Solutions
Algebra 1
College Algebra
College Algebra
Introductory and Intermediate Algebra for College Students (5th Edition)
- TEST TOUR UNDERSTANDING FOR EXAMPLE 2.4 Changes in lifestyle result in a new formula for cholesterol: C=19055e0.4t, with units as before. Make a graph of this new function. Will cholesterol ever reach the danger level of 200 milligrams per deciliter?arrow_forwardGetting a Formula In Exercises S-4 through S-13, a verbal description of a function is given. Use a formula to express the function. You pay 500 to rent a special area in a restaurant. In addition, you pay 10 for each guest. Write a formula that gives your total cost C, in dollars, as a function of the number n of dinner guests.arrow_forwardReminderRound all answers to two decimal places unless otherwise indicated. Cutting TreesIn 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 1.39 shows the net stumpage value V, in dollars per acre, of a Douglas fir stand in the Pacific Northwest as a function of the age t, in years, of the stand. FIGURE 1.39 Net stumpage value of a Douglas Fir a. Estimate the net stumpage value of a Douglas fir 1 stand that is 60 years old. b. Estimate the age of a Douglas fir stand whose net stumpage value is 40,000peracre. 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 t=160years, but the Douglas fir lives for hundreds of years. Draw a graph to represent what you expect for V over the life span of the tree. Explain your reasoning.arrow_forward
- Getting a Formula In Exercises S-4 through S-13, a verbal description of a function is given. Use a formula to express the function. You pay 300 an ounce for high-quality silver for making jewelry. You pay an average of 21 per ounce for turquoise. You sell your completed jewelry for 500 per ounce. Find the net profit P, in dollars, that you make using s ounces of silver and t ounces of turquoise.arrow_forwardSKILL BUILDING EXERCISES Buying for the Short Term: The price of a certain item as a function of time is P(t). Your goal is to buy and then sell the item to make a short term profit. Should you buy when dPdt is positive, negative or 0?arrow_forwardResearch and Development The amounts (in billions of dollars) the U.S. federal government spent on research and development for defense from 2010 through 2014 can be approximated by the model y=0.5079t28.168t+95.08 where t represents the year, with t=0 corresponding to 2010. (a) Use a graphing utility to graph the model. (b) Find the average rate of change of the model from 2010 to 2014. Interpret your answer in the context of the problem.arrow_forward
- Functions and Change: A Modeling Approach to Coll...AlgebraISBN:9781337111348Author:Bruce Crauder, Benny Evans, Alan NoellPublisher:Cengage LearningHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGALGlencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
- Big Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin HarcourtTrigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage Learning