Rate of Change In Exercises 91 and 92, you are given the dollar value of a product in
Trending nowThis is a popular solution!
Chapter 2 Solutions
College Algebra
- Sales Barnes & Noble had annual sales of $6.8 billion in 2013 and $6.1 billion in 2015. Use the Midpoint Formula to estimate the sales in 2014. Assume that the annual sales followed a linear pattern.arrow_forwardFlood Control A river is 8 feet above its flood stage. The water is receding at a rate of 3 inches per hour. Write a mathematical model that shows the number of feet above flood stage after t hours. Assuming the water continually recedes at this rate, when will the river be 1 foot above its flood stage?arrow_forwardNeurology The average weight of a male child’s brain is 970 grams at age 1 and 1270 grams at age 3. (a) Assuming that the relationship between brain weight y and age t is linear, write a linear model for the data. (b) What is the slope and what does it tell you about brain weight? (c) Use your model to estimate the average brain weight at age 2. (d) Use your school’s library, the Internet, or some other reference source to find the actual average brain weight at age 2. How close was your estimate? (e) (d) Do you think your model could be used to determine the average brain weight of an adult? Explain.arrow_forward
- A computer costs $800. It loses 1/4 of its value every year after it is purchased. Write an equation representing the value, v, of the computer, t years after it is purchased. Use your equation to find v when t is 5. What does this value of v mean?arrow_forwardThe yearbook staff at the high school expects to sell 500 yearbooks this year. They expect sales to increase sales by 2% each year. Which explicit equation represents the total yearbooks projected to be sold each year, where x represent number of years?arrow_forwardThink About the Process At the speed of 50 miles per hour (mph), a car's fuel efficiency is 45 miles per gallon (mpg) of gasoline. For every mile per hour over 50, the car loses 3% of its fuel efficiency. Draw a graph to model the situation. How can you tell if the graph represents a proportional relationship? Is the change in the car's fuel efficiency proportional to the car's speed? O A OB. OC. Fuel Efficiency Fuel Efficiency Fuel Efficiency 45 45 0 3 30- 30- - -15- 15- 15- -30- .... 0- 10 Speed Over 50 mph -45- Speed Over 50 mph 10 Speed Over 50 mph What is one way to tell if the graph represents a proportional relationship? O A. The graph will be a line. O B. The graph will pass through the origin O C. The graph will be a line that passes through the origin. O D. The graph will be a curve not a line Is the change in the car's fuel efficiency proportional to the car's speed? Yes No Click to select your answer. Review progress Question 3 of 10 + Back Next >arrow_forward
- How do I solve thisarrow_forwardhter is 18 years old? 19. POPULATION GROWTH A small town in the mountains is experiencing a population boom. The current population is 3800 people and growing by about 15% per year. a. Make a table of values for several years. b. Write an equation for the population in terms of the number of years. c. When will this town's population double?arrow_forwardQuestion 9 Student Enrollment The enrollment at a local business school has been decreasing linearly. In 2001, there where 890 students enrolled. By 2008, there were only 575 students enrolled. Determine the average rate of change of the school's enrollment during this time period, and write a sentence explaining its meaning. The average rate of change = The enrollment at the business school has been Select an answer at a rate of Question Help: Video Submit Question Jump to Answer Increase or Decrease? Select an answer Select an answer 315 in 7 years students yearly students per year.arrow_forward
- Trigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage LearningBig Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage LearningHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL