Nearly half of the U.S. population lives in coastal areas susceptible to coastal hazards, and the number of persons per square mile in these areas is increasing! How much? The number C of persons per square mile living in coastal areas can by approximated by C = 2.5N+ 175, where N is the number of years after 1960. Persons per square mile 350+ 300 250 200 150 100 50 0 1960 1970 1980 1990 2000 2010 2015 Year Noncoastal (a) What is the slope of C = 2.5N + 175? Coastal (b) What does the slope represent? the number of persons per square mile living in coastal areas since 1960 the daily change in the number of persons per square mile living in coastal areas the annual change in the number of persons per square mile living in coastal areas. the daily number of persons per square mile living in coastal areas the annual number of persons per square mile living in coastal areas. (c) How many persons per square mile does the equation C = 2.5N +175 predict for the year 2015 (55 years after 1960)? (d) Is the result you get in part (c) close to the one shown in the graph? Yes, the result in part (c) is close to the one shown in the graph. No, the result shown in the graph is far below the one in part (c). No, the result in part (c) is far below the one shown in the graph.
Nearly half of the U.S. population lives in coastal areas susceptible to coastal hazards, and the number of persons per square mile in these areas is increasing! How much? The number C of persons per square mile living in coastal areas can by approximated by C = 2.5N+ 175, where N is the number of years after 1960. Persons per square mile 350+ 300 250 200 150 100 50 0 1960 1970 1980 1990 2000 2010 2015 Year Noncoastal (a) What is the slope of C = 2.5N + 175? Coastal (b) What does the slope represent? the number of persons per square mile living in coastal areas since 1960 the daily change in the number of persons per square mile living in coastal areas the annual change in the number of persons per square mile living in coastal areas. the daily number of persons per square mile living in coastal areas the annual number of persons per square mile living in coastal areas. (c) How many persons per square mile does the equation C = 2.5N +175 predict for the year 2015 (55 years after 1960)? (d) Is the result you get in part (c) close to the one shown in the graph? Yes, the result in part (c) is close to the one shown in the graph. No, the result shown in the graph is far below the one in part (c). No, the result in part (c) is far below the one shown in the graph.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Nearly half of the U.S. population lives in coastal areas susceptible to coastal hazards, and the number of persons per square mile in
these areas is increasing! How much? The number C of persons per square mile living in coastal areas can by approximated by
C = 2.5N + 175, where N is the number of years after 1960.
Persons per square mile
350
300
250
200
150
100
50
0
1960 1970 1980 1990 2000 2010 2015
Year
Noncoastal
(a) What is the slope of C = 2.5N + 175?
Coastal
(b) What does the slope represent?
the number of persons per square mile living in coastal areas since 1960
the daily change in the number of persons per square mile living in coastal areas
the annual change in the number of persons per square mile living in coastal areas
the daily number of persons per square mile living in coastal areas
the annual number of persons per square mile living in coastal areas
(c) How many persons per square mile does the equation C = 2.5N +175 predict for the year 2015 (55 years after 1960)?
(d) Is the result you get in part (c) close to the one shown in the graph?
Yes, the result in part (c) is close to the one shown in the graph.
No, the result shown in the graph is far below the one in part (c).
No, the result in part (c) is far below the one shown in the graph.
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