Concept explainers
a.
Use a graphical utility to create a sactter plot of the data.
a.
Answer to Problem 23PS
The
Explanation of Solution
Calculation:
The scatter plot of the data is given as
Hence, the graph is shown above.
b.
Decide the model for data .
b.
Answer to Problem 23PS
logarithmic model.
Explanation of Solution
Calculation:
The best model for these points is logarithmic model
Hence, the data could be modelled by a logarithmic model
c.
Explain the model of part
c.
Answer to Problem 23PS
From the graph, we can see that points are increasing non-linearly, so, we cannot use a model linear model for this. We can also see that points are not growing rapidly,so, exponential model is not suitable.
Explanation of Solution
Calculation:
From the graph, we can see that points are increasing non-linearly, so, we cannot use a model linear model for this. We can also see that points are not growing rapidly,so, exponential model is not suitable.
Hence, we chose logarithmic model.
d.
find the model you chose in part (b) for the data and graph the model with scatter plot.
d.
Answer to Problem 23PS
Explanation of Solution
Calculation:
Now, by using the values of and from the data and graphing utility we get,
Hence, the required model is
Now, the graph of scatter plot is,
Hence, the graph is shown above.
e.
Determine if the model you chose fits the data.
e.
Answer to Problem 23PS
From the graph we can see that the model we get fits the data very well.
Explanation of Solution
Calculation:
From the graph we can see that the model we get fits the data very well.
Hence, logarithmic model fits the data very well.
Chapter 3 Solutions
Precalculus with Limits
- Consider the graphs of y = f(x) and y = g(x) in the given diagram y= f(x). y = g(x) Evaluate (f+g)(2) -5 Determine all for which g(x) < f(x) Determine all for which f(x) +3 = g(x)arrow_forwardI) For what value(s) of x does g(x) = -4? Separate multiple answers with commas as needed. J) Give the interval(s) of such that g(x) > 0. Use the union symbol between multiple intervals. K) Give the interval(s) of such that g(x) <0. Use the union symbol between multiple intervals.arrow_forwardneed help on Barrow_forward
- 4. Use the properties of limits to help decide whether each limit exists. If a limit exists, fi lim (2x²-4x+5) a) x-4 b) lim 2 x²-16 x-4x+2x-8arrow_forward7. The concentration of a drug in a patient's bloodstream h hours after it was injected is given by 0.17 h Ah= h²+2' Find and interpret lim A(h). Remember, the answers to word problems should always be given in a complete h→00 sentence, with proper units, in the context of the problem.arrow_forward#2arrow_forward
- 2. We want to find the inverse of f(x) = (x+3)² a. On the graph at right, sketch f(x). (Hint: use what you know about transformations!) (2 points) b. What domain should we choose to get only the part of f (x) that is one- to-one and non-decreasing? Give your answer in inequality notation. (2 points) - c. Now use algebra to find f¯¹ (x). (2 points) -4- 3- 2 1 -4 -3 -2 -1 0 1 -1- -2- --3- -4 -N- 2 3 4arrow_forward1. Suppose f(x) = 2 4 == x+3 and g(x) = ½-½. Find and fully simplify ƒ(g(x)). Be sure to show all x your work, write neatly so your work is easy to follow, and connect your expressions with equals signs. (4 points)arrow_forwardFind the ane sided limit lim 2 x+1-3x-3arrow_forward
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning